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Northern California (colloquially known as NorCal) is a geographic and cultural region that generally comprises the northern portion of the U.S. state of
California California is a state in the Western United States, located along the Pacific Coast. With nearly 39.2million residents across a total area of approximately , it is the most populous U.S. state and the 3rd largest by area. It is also the m ...
. Spanning the state's northernmost 48 counties, its main population centers include the
San Francisco Bay Area The San Francisco Bay Area, often referred to as simply the Bay Area, is a populous region surrounding the San Francisco, San Pablo, and Suisun Bay estuaries in Northern California. The Bay Area is defined by the Association of Bay Area G ...
(anchored by the cities of San Jose,
San Francisco San Francisco (; Spanish for " Saint Francis"), officially the City and County of San Francisco, is the commercial, financial, and cultural center of Northern California. The city proper is the fourth most populous in California and 17t ...
, and Oakland), the Greater Sacramento area (anchored by the state capital
Sacramento ) , image_map = Sacramento County California Incorporated and Unincorporated areas Sacramento Highlighted.svg , mapsize = 250x200px , map_caption = Location within Sacramento ...
), the
Redding, California Redding is the economic and cultural capital of the Shasta Cascade region of Northern California and the county seat of Shasta County. Redding lies along the Sacramento River, north of Sacramento, and south of California's northern border ...
, area south of the Cascade Range, and the Metropolitan Fresno area (anchored by the city of Fresno). Northern California also contains redwood forests, along with most of the
Sierra Nevada The Sierra Nevada () is a mountain range in the Western United States, between the Central Valley of California and the Great Basin. The vast majority of the range lies in the state of California, although the Carson Range spur lies primar ...
, including Yosemite Valley and part of Lake Tahoe,
Mount Shasta Mount Shasta ( Shasta: ''Waka-nunee-Tuki-wuki''; Karuk: ''Úytaahkoo'') is a potentially active volcano at the southern end of the Cascade Range in Siskiyou County, California. At an elevation of , it is the second-highest peak in the Cascad ...
(the second-highest peak in the Cascade Range after Mount Rainier in
Washington Washington commonly refers to: * Washington (state), United States * Washington, D.C., the capital of the United States ** A metonym for the federal government of the United States ** Washington metropolitan area, the metropolitan area centered o ...
), and most of the Central Valley, one of the world's most productive agricultural regions. The 48-county definition is not used for the Northern California Megaregion, one of the 11 megaregions of the United States. The megaregion's area is instead defined from Metropolitan Fresno north to Greater Sacramento, and from the Bay Area east across
Nevada Nevada ( ; ) is a U.S. state, state in the Western United States, Western region of the United States. It is bordered by Oregon to the northwest, Idaho to the northeast, California to the west, Arizona to the southeast, and Utah to the east. N ...
state line to encompass the entire Lake Tahoe-
Reno Reno ( ) is a city in the northwest section of the U.S. state of Nevada, along the Nevada-California border, about north from Lake Tahoe, known as "The Biggest Little City in the World". Known for its casino and tourism industry, Reno is th ...
area. Evidence of Native American habitation in the area dates from at least 19,000 years ago and successive waves of arrivals led to one of the most densely populated areas of pre-Columbian North America. The arrival of European explorers from the early 16th to the mid-18th centuries did not establish European settlements in northern California. In 1770, the Spanish mission at Monterey was the first European settlement in the area, followed by other missions along the coast—eventually extending as far north as Sonoma County.


Description

Northern California is not a formal geographic designation. California's north–south midway division is around 37°N, which is near the level of San Francisco. Popularly, though, "Northern California" usually refers to the state's northernmost 48 counties. Because of California's large size and diverse geography, the state can be subdivided in other ways as well. For example, the Central Valley is a region that is distinct both culturally and topographically from coastal California, though in northern versus southern California divisions, the Sacramento Valley and most of the
San Joaquin Valley The San Joaquin Valley ( ; es, Valle de San Joaquín) is the area of the Central Valley of the U.S. state of California that lies south of the Sacramento–San Joaquin River Delta and is drained by the San Joaquin River. It comprises seven ...
are usually placed in northern California. Some observers describe three partitions of California, with north and south sections separated by Central California. The state is often considered as having an additional division north of the urban areas of the
San Francisco Bay Area The San Francisco Bay Area, often referred to as simply the Bay Area, is a populous region surrounding the San Francisco, San Pablo, and Suisun Bay estuaries in Northern California. The Bay Area is defined by the Association of Bay Area G ...
and
Sacramento ) , image_map = Sacramento County California Incorporated and Unincorporated areas Sacramento Highlighted.svg , mapsize = 250x200px , map_caption = Location within Sacramento ...
metropolitan areas. Extreme northern residents have felt under-represented in state government and, in 1941, attempted to form a new state with southwestern Oregon to be called Jefferson, or more recently to introduce legislation to split California into two or three states. The coastal area north of the Bay Area is referred to as the North Coast, including the "Lost Coast" in the vicinity of Mendocino County, while the interior region north of Sacramento is referred to by locals as the Northstate. Northern California was used for the name of a proposed new state on the 2018 California ballot created by splitting the existing state into three parts.


Significance

Since the events of the California Gold Rush, Northern California has been a leader on the world's economic, scientific, and cultural stages. From the development of gold mining techniques and logging practices in the 19th century that were later adopted around the world, to the development of world-famous and online business models (such as
Apple An apple is an edible fruit produced by an apple tree (''Malus domestica''). Apple trees are cultivated worldwide and are the most widely grown species in the genus '' Malus''. The tree originated in Central Asia, where its wild ancest ...
,
Hewlett-Packard The Hewlett-Packard Company, commonly shortened to Hewlett-Packard ( ) or HP, was an American multinational information technology company headquartered in Palo Alto, California. HP developed and provided a wide variety of hardware components ...
,
Google Google LLC () is an American Multinational corporation, multinational technology company focusing on Search Engine, search engine technology, online advertising, cloud computing, software, computer software, quantum computing, e-commerce, ar ...
,
Yahoo! Yahoo! (, styled yahoo''!'' in its logo) is an American web services provider. It is headquartered in Sunnyvale, California and operated by the namesake company Yahoo Inc., which is 90% owned by investment funds managed by Apollo Global Mana ...
, and
eBay eBay Inc. ( ) is an American multinational e-commerce company based in San Jose, California, that facilitates consumer-to-consumer and business-to-consumer sales through its website. eBay was founded by Pierre Omidyar in 1995 and became ...
), northern California has been at the forefront of new ways of doing business. In science, advances range from being the first to isolate and name fourteen transuranic
chemical element A chemical element is a species of atoms that have a given number of protons in their atomic nucleus, nuclei, including the pure Chemical substance, substance consisting only of that species. Unlike chemical compounds, chemical elements canno ...
s, to breakthroughs in microchip technology. Cultural contributions include the works of Ansel Adams,
George Lucas George Walton Lucas Jr. (born May 14, 1944) is an American filmmaker. Lucas is best known for creating the '' Star Wars'' and '' Indiana Jones'' franchises and founding Lucasfilm, LucasArts, Industrial Light & Magic and THX. He served as c ...
, and Clint Eastwood, as well as
beatniks Beatniks were members of a social movement in the 1950s that subscribed to an anti-materialistic lifestyle. History In 1948, Jack Kerouac introduced the phrase "Beat Generation", generalizing from his social circle to characterize the undergr ...
, the Summer of Love,
winemaking Winemaking or vinification is the production of wine, starting with the selection of the fruit, its fermentation into alcohol, and the bottling of the finished liquid. The history of wine-making stretches over millennia. The science of wine and ...
, the cradle of the international environmental movement, and the open, casual workplace first popularized in the Silicon Valley dot-com boom and now widely in use around the world. Other examples of innovation across diverse fields range from Genentech (development and commercialization of genetic engineering) to
CrossFit CrossFit is a branded fitness regimen that involves constantly varied functional movements performed at high intensity. The method was developed by Greg Glassman, who founded CrossFit with Lauren Jenai in 2000, with CrossFit its registered trad ...
as a pioneer in extreme human fitness and training. It is also home to one of the largest Air Force Bases on the West Coast, and the largest in California, Travis Air Force Base.


Cities

Northern California's largest
metropolitan area A metropolitan area or metro is a region that consists of a densely populated urban agglomeration and its surrounding territories sharing industries, commercial areas, transport network, infrastructures and housing. A metro area usually ...
is the
San Francisco Bay Area The San Francisco Bay Area, often referred to as simply the Bay Area, is a populous region surrounding the San Francisco, San Pablo, and Suisun Bay estuaries in Northern California. The Bay Area is defined by the Association of Bay Area G ...
which consists of 9 counties: Alameda, Contra Costa, Marin, Napa, San Francisco, San Mateo, Santa Clara, Solano, and Sonoma counties. The Bay Area consists of the major cities of San Jose,
San Francisco San Francisco (; Spanish for " Saint Francis"), officially the City and County of San Francisco, is the commercial, financial, and cultural center of Northern California. The city proper is the fourth most populous in California and 17t ...
, Oakland, and their many
suburbs A suburb (more broadly suburban area) is an area within a metropolitan area, which may include commercial and mixed-use, that is primarily a residential area. A suburb can exist either as part of a larger city/urban area or as a separa ...
. Although not a part of the Bay Area, in recent years the Bay Area has drawn more commuters from as far as Central Valley cities such as
Sacramento ) , image_map = Sacramento County California Incorporated and Unincorporated areas Sacramento Highlighted.svg , mapsize = 250x200px , map_caption = Location within Sacramento ...
, Stockton, Fresno, Turlock and
Modesto Modesto () is the county seat and largest city of Stanislaus County, California, United States. With a population of 218,464 at the 2020 census, it is the 19th largest city in the state of California and forms part of the Sacramento-Stockton ...
. These cities in the central part of the Central Valley and Sierra Nevada foothills may be viewed as part of a single megalopolis. The 2010 U.S. Census showed that the Bay Area grew at a faster rate than the
Greater Los Angeles Area Greater Los Angeles is the second-largest metropolitan region in the United States with a population of 18.5 million in 2021, encompassing five counties in Southern California extending from Ventura County in the west to San Bernardino ...
while Greater Sacramento had the largest growth rate of any metropolitan area in California. The state's larger inland cities are considered part of Northern California in cases when the state is divided into two parts. Key cities in the region which are not in major metropolitan areas include Eureka on the far North Coast, Redding, at the northern end of the Central Valley, Chico, and Yuba City in the mid-north of the Central Valley, as well as Fresno and Visalia on the southern end. Though smaller in each case, with the notable exception of Fresno, than the larger cities of the general region, these smaller regional centers are often of historical and economic importance for their respective size, due to their locations, which are primarily rural or otherwise isolated. Panoramic Downtown San Jose.jpg, San Jose, the most populous city in Northern California and the
San Francisco Bay Area The San Francisco Bay Area, often referred to as simply the Bay Area, is a populous region surrounding the San Francisco, San Pablo, and Suisun Bay estuaries in Northern California. The Bay Area is defined by the Association of Bay Area G ...
, and the tenth largest city in the United States. San Jose is the center of
Silicon Valley Silicon Valley is a region in Northern California that serves as a global center for high technology and innovation. Located in the southern part of the San Francisco Bay Area, it corresponds roughly to the geographical areas San Mateo Cou ...
, the preeminent region for technology in the country. SanFran downtown panorama.jpg,
San Francisco San Francisco (; Spanish for " Saint Francis"), officially the City and County of San Francisco, is the commercial, financial, and cultural center of Northern California. The city proper is the fourth most populous in California and 17t ...
, the second most populated city in Northern California and a major economic, cultural, and financial center for the region. File:Chukchansi.jpg, Fresno, the third most populated city in northern California, as seen from Chukchansi Park. Fresno is the largest city by population in the Central Valley. File:Sacramento Skyline (cropped).jpg, alt=Sacramento Skyline (cropped).jpg,
Sacramento ) , image_map = Sacramento County California Incorporated and Unincorporated areas Sacramento Highlighted.svg , mapsize = 250x200px , map_caption = Location within Sacramento ...
, the fourth most populous city in Northern California, the capital city of the State of
California California is a state in the Western United States, located along the Pacific Coast. With nearly 39.2million residents across a total area of approximately , it is the most populous U.S. state and the 3rd largest by area. It is also the m ...
, and the principal city of the
Sacramento metropolitan area The Greater Sacramento area refers to a metropolitan region in Northern California comprising either the U.S. Census Bureau defined Sacramento–Roseville–Arden-Arcade metropolitan statistical area or the larger Sacramento–Roseville combine ...
. File:Panorama-downtown-oakland by Daniel Ramirez.jpg, Oakland, the fifth-largest city by population in Northern California. Oakland is the major port city of the region and the center of Northern California's
African American African Americans (also referred to as Black Americans and Afro-Americans) are an ethnic group consisting of Americans with partial or total ancestry from sub-Saharan Africa. The term "African American" generally denotes descendants of ens ...
community.


History


Prehistory to 1847

Inhabited for millennia by Native Americans, from the Shasta tribe in the north, to the
Miwok The Miwok (also spelled Miwuk, Mi-Wuk, or Me-Wuk) are members of four linguistically related Native American groups indigenous to what is now Northern California, who traditionally spoke one of the Miwok languages in the Utian family. The word ...
s in the central coast and Sierra Nevada, to the Yokuts of the southern Central Valley, northern California was among the most densely populated areas of pre-Columbian North America.


European explorers

The first European to explore the coast was Juan Rodríguez Cabrillo, sailing for the Spanish Crown; in 1542, Cabrillo's expedition sailed perhaps as far north as the Rogue River in today's
Oregon Oregon () is a U.S. state, state in the Pacific Northwest region of the Western United States. The Columbia River delineates much of Oregon's northern boundary with Washington (state), Washington, while the Snake River delineates much of it ...
. Beginning in 1565, the Spanish
Manila galleon fil, Galyon ng Maynila , english_name = Manila Galleon , duration = From 1565 to 1815 (250 years) , venue = Between Manila and Acapulco , location = New Spain ( Spanish Empir ...
s crossed the Pacific Ocean from
Mexico Mexico (Spanish language, Spanish: México), officially the United Mexican States, is a List of sovereign states, country in the southern portion of North America. It is borders of Mexico, bordered to the north by the United States; to the so ...
to the Spanish
Philippines The Philippines (; fil, Pilipinas, links=no), officially the Republic of the Philippines ( fil, Republika ng Pilipinas, links=no), * bik, Republika kan Filipinas * ceb, Republika sa Pilipinas * cbk, República de Filipinas * hil, Republ ...
, with silver and gemstones from Mexico. The Manila galleons returned across the northern Pacific, and reached North America usually off the coast of northern California, and then continued south with their Asian trade goods to Mexico. In 1579, northern California was visited by the English explorer
Sir Francis Drake Sir Francis Drake ( – 28 January 1596) was an English explorer, sea captain, privateer, slave trader, naval officer, and politician. Drake is best known for his circumnavigation of the world in a single expedition, from 1577 to 158 ...
who landed north of today's
San Francisco San Francisco (; Spanish for " Saint Francis"), officially the City and County of San Francisco, is the commercial, financial, and cultural center of Northern California. The city proper is the fourth most populous in California and 17t ...
and claimed the area for England. In 1602, the Spaniard Sebastián Vizcaíno explored California's coast as far north as Monterey Bay, where he went ashore. Other Spanish explorers sailed along the coast of northern California for the next 150 years, but no settlements were established.


Spanish era

The first European inhabitants were Spanish missionaries, who built missions along the California coast. The mission at Monterey was first established in 1770, and at
San Francisco San Francisco (; Spanish for " Saint Francis"), officially the City and County of San Francisco, is the commercial, financial, and cultural center of Northern California. The city proper is the fourth most populous in California and 17t ...
in 1776. In all, ten missions stretched along the coast from Sonoma to Monterey (and still more missions to the southern tip of
Baja California Baja California (; 'Lower California'), officially the Free and Sovereign State of Baja California ( es, Estado Libre y Soberano de Baja California), is a state in Mexico. It is the northernmost and westernmost of the 32 federal entities of Mex ...
). In 1786, the
French French (french: français(e), link=no) may refer to: * Something of, from, or related to France ** French language, which originated in France, and its various dialects and accents ** French people, a nation and ethnic group identified with Franc ...
signaled their interest in the northern California area by sending a voyage of exploration to Monterey. The first twenty years of the 19th century continued the colonization of the northern California coast by Spain. By 1820, Spanish influence extended inland approximately 25 to from the missions. Outside of this zone, perhaps 200,000 to 250,000 Native Americans continued to lead traditional lives. The Adams-Onís Treaty, signed in 1819 between Spain and the young United States, set the northern boundary of the Spanish claims at the 42nd parallel, effectively creating today's northern boundary of northern California.


Russian presence

In 1812, the Russian state-sponsored Russian-American Company established Fort Ross, a fur trading outpost on the coast of today's Sonoma County. Fort Ross was the southernmost Russian settlement, located some north of Spanish colonies in San Francisco. In 1839, the settlement was abandoned due to its inability to meet resource demands, and the increasing Mexican and American presence in the region.


Mexican era

After Mexico gained independence from Spain in 1821, Mexico continued Spain's missions and settlements in northern California as well as Spain's territorial claims. The Mexican ''
Californio Californio (plural Californios) is a term used to designate a Hispanic Californian, especially those descended from Spanish and Mexican settlers of the 17th through 19th centuries. California's Spanish-speaking community has resided there sin ...
s'' (Spanish-speaking Californians) in these settlements primarily traded cattle hides and
tallow Tallow is a rendered form of beef or mutton fat, primarily made up of triglycerides. In industry, tallow is not strictly defined as beef or mutton fat. In this context, tallow is animal fat that conforms to certain technical criteria, includ ...
with American and European merchant vessels. In 1825, the
Hudson's Bay Company The Hudson's Bay Company (HBC; french: Compagnie de la Baie d'Hudson) is a Canadian retail business group. A fur trading business for much of its existence, HBC now owns and operates retail stores in Canada. The company's namesake business di ...
established a major trading post just north of today's
Portland, Oregon Portland (, ) is a port city in the Pacific Northwest and the largest city in the U.S. state of Oregon. Situated at the confluence of the Willamette and Columbia rivers, Portland is the county seat of Multnomah County, the most populous ...
. British fur trappers and hunters then used the Siskiyou Trail to travel throughout northern California. The leader of a further French scientific expedition to northern California, Eugene Duflot de Mofras, wrote in 1840 "''...it is evident that California will belong to whatever nation chooses to send there a man-of-war and two hundred men''." By the 1830s, a significant number of non-''Californios'' had immigrated to northern California. Chief among these was John Sutter, a European immigrant from
Switzerland ). Swiss law does not designate a ''capital'' as such, but the federal parliament and government are installed in Bern, while other federal institutions, such as the federal courts, are in other cities (Bellinzona, Lausanne, Luzern, Neuchâtel ...
, who was granted centered on the area of today's
Sacramento ) , image_map = Sacramento County California Incorporated and Unincorporated areas Sacramento Highlighted.svg , mapsize = 250x200px , map_caption = Location within Sacramento ...
.


American interest

American trappers began entering northern California in the 1830s. In 1834, American visionary Ewing Young led a herd of horses and mules over the Siskiyou Trail from missions in northern California to British and American settlements in
Oregon Oregon () is a U.S. state, state in the Pacific Northwest region of the Western United States. The Columbia River delineates much of Oregon's northern boundary with Washington (state), Washington, while the Snake River delineates much of it ...
. Although a small number of American traders and trappers had lived in northern California since the early 1830s, the first organized overland party of American immigrants to arrive in northern California was the Bartleson-Bidwell Party of 1841 via the new
California Trail The California Trail was an emigrant trail of about across the western half of the North American continent from Missouri River towns to what is now the state of California. After it was established, the first half of the California Trail f ...
. Also in 1841, an overland exploratory party of the
United States Exploring Expedition The United States Exploring Expedition of 1838–1842 was an exploring and surveying expedition of the Pacific Ocean and surrounding lands conducted by the United States. The original appointed commanding officer was Commodore Thomas ap Catesby ...
came down the Siskiyou Trail from the Pacific Northwest. In 1846, the Donner Party earned notoriety as they struggled to enter northern California.


Californian independence and beginning of the United States era

When the
Mexican–American War The Mexican–American War, also known in the United States as the Mexican War and in Mexico as the (''United States intervention in Mexico''), was an armed conflict between the United States and Mexico from 1846 to 1848. It followed the ...
was declared on May 13, 1846, it took almost two months (mid-July 1846) for word to get to California. On June 14, 1846, some 30 non-Mexican settlers, mostly Americans, staged a revolt and seized the small Mexican garrison in Sonoma. They raised the " Bear Flag" of the
California Republic The California Republic ( es, La República de California), or Bear Flag Republic, was an unrecognized breakaway state from Mexico, that for 25 days in 1846 militarily controlled an area north of San Francisco, in and around what is now So ...
over Sonoma. The "Bear Flag Republic" lasted only 26 days, until the U.S. Army, led by John Frémont, took over on July 9. The California state flag today is based on this original Bear Flag, and continues to contain the words "California Republic." Commodore
John Drake Sloat John Drake Sloat (July 26, 1781 – November 28, 1867) was a commodore in the United States Navy who, in 1846, claimed California for the United States. Life He was born at the family home of Sloat House in Sloatsburg, New York, of Dutch ancestr ...
ordered his naval forces to occupy Yerba Buena (present
San Francisco San Francisco (; Spanish for " Saint Francis"), officially the City and County of San Francisco, is the commercial, financial, and cultural center of Northern California. The city proper is the fourth most populous in California and 17t ...
) on July 7 and within days American forces controlled San Francisco, Sonoma, and
Sutter's Fort Sutter's Fort was a 19th-century agricultural and trade colony in the Mexican '' Alta California'' province.National Park Service"California National Historic Trail."/ref> The site of the fort was established in 1839 and originally called New Hel ...
in Sacramento. The
treaty A treaty is a formal, legally binding written agreement between actors in international law. It is usually made by and between sovereign states, but can include international organizations, individuals, business entities, and other legal per ...
ending the Mexican–American War was signed on February 2, 1848, and Mexico formally ceded Alta California (including all of present-day northern California) to the United States.


Gold Rush and California statehood

The California Gold Rush took place almost exclusively in northern California from 1848 to 1855. It began on January 24, 1848, when
gold Gold is a chemical element with the symbol Au (from la, aurum) and atomic number 79. This makes it one of the higher atomic number elements that occur naturally. It is a bright, slightly orange-yellow, dense, soft, malleable, and ductile ...
was discovered at Sutter's Mill in Coloma." ents from January 1848 through December 1855 regenerally acknowledged as the 'Gold Rush' .... After 1855, California gold mining changed and is outside the 'rush' era." News of the discovery soon spread, resulting in some 300,000 people coming to California from the rest of the United States and abroad.
San Francisco San Francisco (; Spanish for " Saint Francis"), officially the City and County of San Francisco, is the commercial, financial, and cultural center of Northern California. The city proper is the fourth most populous in California and 17t ...
grew from a tiny hamlet, home to about 1,000 Californios into a
boomtown A boomtown is a community that undergoes sudden and rapid population and economic growth, or that is started from scratch. The growth is normally attributed to the nearby discovery of a precious resource such as gold, silver, or oil, althou ...
of over 50,000 people in the 12 years between 1848 and 1860. New roads, churches, and schools were built, and new towns sprung up, aided in part by the development of new methods of transportation such as
steamship A steamship, often referred to as a steamer, is a type of steam-powered vessel, typically ocean-faring and seaworthy, that is propelled by one or more steam engines that typically move (turn) propellers or paddlewheels. The first steamship ...
s which came into regular service and railroads which now connected the coasts. The Gold Rush also had negative effects: American colonists chose to use genocide as a tool to remove the
Indigenous people Indigenous peoples are culturally distinct ethnic groups whose members are directly descended from the earliest known inhabitants of a particular geographic region and, to some extent, maintain the language and culture of those original people ...
so that they could look for gold on their land. Native oyster species saw their numbers plummet when American colonists began over-harvesting them, leading to a near-extinction of the oysters from the California coast on up into the
Pacific Northwest The Pacific Northwest (sometimes Cascadia, or simply abbreviated as PNW) is a geographic region in western North America bounded by its coastal waters of the Pacific Ocean to the west and, loosely, by the Rocky Mountains to the east. Thou ...
, and gold mining caused environmental harm. The Gold Rush also increased pressure to make California a U.S. state. Pro-slavery politicians initially attempted to permanently divide northern and southern California at 36 degrees, 30 minutes, the line of the
Missouri Compromise The Missouri Compromise was a federal legislation of the United States that balanced desires of northern states to prevent expansion of slavery in the country with those of southern states to expand it. It admitted Missouri as a Slave states an ...
. But instead, the passing of the Compromise of 1850 enabled California to be admitted to the Union as a free state.


Population and agricultural expansion (1855–1899)

The decades following the Gold Rush brought dramatic expansion to northern California, both in population and economically – particularly in agriculture. The completion of the First transcontinental railroad in 1869, with its terminus in Sacramento (and then later, Oakland), meant that northern California's agricultural produce (and some manufactured goods) could now be shipped economically to the rest of the United States. In return, immigrants from the rest of the United States (and Europe) could comfortably come to northern California. A network of railroads spread throughout northern California, and in 1887, a rail link was completed to the
Pacific Northwest The Pacific Northwest (sometimes Cascadia, or simply abbreviated as PNW) is a geographic region in western North America bounded by its coastal waters of the Pacific Ocean to the west and, loosely, by the Rocky Mountains to the east. Thou ...
. Almost all of these railways came under the control of the Southern Pacific Railroad, headquartered in San Francisco, and San Francisco continued as a financial and cultural center. Substantial tensions during this era included nativist sentiments (primarily against Chinese immigrants), tensions between the increasing power of the Southern Pacific Railroad and small farmers, and the beginnings of the labor union movement.


Economy

Northern California's economy is noted for being the de facto world leader in high-tech industry (
software Software is a set of computer programs and associated documentation and data. This is in contrast to hardware, from which the system is built and which actually performs the work. At the lowest programming level, executable code consist ...
,
semiconductor A semiconductor is a material which has an electrical conductivity value falling between that of a conductor, such as copper, and an insulator, such as glass. Its resistivity falls as its temperature rises; metals behave in the opposite way ...
/micro-electronics,
biotechnology Biotechnology is the integration of natural sciences and engineering sciences in order to achieve the application of organisms, cells, parts thereof and molecular analogues for products and services. The term ''biotechnology'' was first used ...
and
medical devices A medical device is any device intended to be used for medical purposes. Significant potential for hazards are inherent when using a device for medical purposes and thus medical devices must be proved safe and effective with reasonable assura ...
/instruments), as well as being known for clean power, biomedical, government, and finance. Other significant industries include tourism, shipping, manufacturing, and agriculture. Its economy is diverse, though more concentrated in high technology, and subject to the whims of
venture capital Venture capital (often abbreviated as VC) is a form of private equity financing that is provided by venture capital firms or funds to startups, early-stage, and emerging companies that have been deemed to have high growth potential or which h ...
than any other major regional economy in the nation especially within
Silicon Valley Silicon Valley is a region in Northern California that serves as a global center for high technology and innovation. Located in the southern part of the San Francisco Bay Area, it corresponds roughly to the geographical areas San Mateo Cou ...
, and less dependent on oil and residential housing than
Southern California Southern California (commonly shortened to SoCal) is a geographic and cultural region that generally comprises the southern portion of the U.S. state of California. It includes the Los Angeles metropolitan area, the second most populous urban ...
. It is home to the state capital, as well as several Western United States regional offices in San Francisco, such as the
Federal Reserve The Federal Reserve System (often shortened to the Federal Reserve, or simply the Fed) is the central banking system of the United States of America. It was created on December 23, 1913, with the enactment of the Federal Reserve Act, after a ...
and 9th Circuit Court.


Climate

Northern California has a warm or mild to cold climate, in which the Sierra gets snow in the late fall through winter and occasionally into spring. Summers are mild along the coast and generally warm and dry, while winters are cool and usually wet. The high temperatures range from 50s to 30s in the winters while summers temperature range is 90s to 60s or 50s, with highs well into the 100s for the Sacramento region. Snow covers the mountains (generally above 3000 feet) in mid January through February. Fog occurs infrequently or occurs normally in the west and coast, especially in the summer, creating some of the coolest summer conditions in North America. Since the first decade of the 21st century, droughts and wildfires have increased in frequency as a consequence of
climate change In common usage, climate change describes global warming—the ongoing increase in global average temperature—and its effects on Earth's climate system. Climate change in a broader sense also includes previous long-term changes to ...
.


Population

The population of the forty-eight counties of northern California has shown a steady increase over the years. The largest percentage increase outside the Gold Rush era (52%) came during the 1940s, as the region was the destination of many post-War veterans and their families, attracted by the greatly expanding industrial base and (often) by their time stationed in northern California during
World War II World War II or the Second World War, often abbreviated as WWII or WW2, was a world war that lasted from 1939 to 1945. It involved the World War II by country, vast majority of the world's countries—including all of the great power ...
. The largest absolute increase occurred during the 1980s (over 2.1 million person increase), attracted by job opportunities in part by the expansion taking place in
Silicon Valley Silicon Valley is a region in Northern California that serves as a global center for high technology and innovation. Located in the southern part of the San Francisco Bay Area, it corresponds roughly to the geographical areas San Mateo Cou ...
and the
Cold War The Cold War is a term commonly used to refer to a period of geopolitical tension between the United States and the Soviet Union and their respective allies, the Western Bloc and the Eastern Bloc. The term '' cold war'' is used because t ...
era expansion of the defense industry. Since the 2000 U.S. Census, Northern California has grown at a faster rate than Southern California due to the strong economic performances of the Bay Area and Sacramento.


Parks and other protected areas


National Park System

The U.S. National Park System controls a large and diverse group of parks in northern California. The best known is
Yosemite National Park Yosemite National Park ( ) is an American national park in California, surrounded on the southeast by Sierra National Forest and on the northwest by Stanislaus National Forest. The park is managed by the National Park Service and covers an ...
, which is displayed on the reverse side of the California state quarter. Other prominent parks are the Kings Canyon-
Sequoia National Park Sequoia National Park is an American national park in the southern Sierra Nevada east of Visalia, California. The park was established on September 25, 1890, and today protects of forested mountainous terrain. Encompassing a vertical relief ...
complex, Redwood National Park, Pinnacles National Park, Lassen Volcanic National Park and the largest in the contiguous forty-eight states,
Death Valley National Park Death Valley National Park is an American national park that straddles the California–Nevada border, east of the Sierra Nevada. The park boundaries include Death Valley, the northern section of Panamint Valley, the southern section of Eurek ...
.


National Monuments and other federally protected areas

Other areas under federal protection include Muir Woods National Monument, Giant Sequoia National Monument, Devils Postpile National Monument,
Lava Beds National Monument Lava Beds National Monument is located in northeastern California, in Siskiyou and Modoc counties. The monument lies on the northeastern flank of Medicine Lake Volcano and has the largest total area covered by a volcano in the Cascade Range. ...
, Point Reyes National Seashore, the
Monterey Bay National Marine Sanctuary The Monterey Bay National Marine Sanctuary (MBNMS) is a federally protected marine area offshore of California's Big Sur and central coast in the United States. It is the largest US national marine sanctuary and has a shoreline length of ...
, and the Cordell Bank and
Gulf of the Farallones Gulf of the Farallones is a gulf of the Pacific Ocean off the northern California coast. It extends westward from the opening of the San Francisco Bay and Drakes Bay to the Farallon Islands. Most of the gulf lies in Gulf of the Farallones Nati ...
National Marine Sanctuaries (both off the coast of San Francisco). Included within the latter National Marine Sanctuary is the Farallon National Wildlife Refuge; this National Wildlife Refuge is one of approximately twenty-five such refuges in northern California. National forests occupy large sections of northern California, including the Shasta–Trinity, Klamath, Modoc,
Lassen Lassen is a Danish language, Danish and Norwegian language, Norwegian patronymic surname meaning "son of Lars" (equivalent of Laurentius), and thus a parallel form of the more common surname Larsen. Notable people with the surname include: * Ander ...
, Mendocino, Eldorado, Tahoe, and Sequoia national forests, among others. Included within (or adjacent to) national forests are federally protected wilderness areas, including the Trinity Alps,
Castle Crags Castle Crags is a dramatic and well-known rock formation in Northern California. Elevations range from along the Sacramento River near the base of the crags, to over at the summit of the tallest crag. Located just west of Interstate 5, betwe ...
, Granite Chief, and Desolation wilderness areas. In addition, the
California Coastal National Monument The California Coastal National Monument is located along the entire coastline of the U.S. state of California. This monument ensures the protection of all islets, reefs and rock outcroppings along the coast of California within of shore alon ...
protects all islets, reefs, and rock outcroppings from the shore of northern California out to a distance of , along the entire northern California coastline. In addition, the National Park Service administers protected areas on Alcatraz Island, the Golden Gate National Recreation Area,
Whiskeytown–Shasta–Trinity National Recreation Area The Whiskeytown–Shasta–Trinity National Recreation Area is a United States National Recreation Area in northern California.Smith River National Recreation Area Smith River National Recreation Area is a protected area located in northwestern California, United States. The national recreation area is in Six Rivers National Forest and is managed by the U.S. Forest Service, an agency of the U.S. Department ...
. The NPS also administers the Manzanar National Historic Site in Inyo County, the
Rosie the Riveter World War II Home Front National Historical Park Rosie the Riveter World War II Home Front National Historical Park is a United States national historical park located in Richmond, California, near San Francisco. The park preserves and interprets the legacy of the United States home front d ...
in
Richmond Richmond most often refers to: * Richmond, Virginia, the capital of Virginia, United States * Richmond, London, a part of London * Richmond, North Yorkshire, a town in England * Richmond, British Columbia, a city in Canada * Richmond, Californi ...
, and the
Tule Lake National Monument The Tule Lake National Monument in Modoc County, California, Modoc and Siskiyou County, California, Siskiyou counties in California, consists primarily of the site of the Tule Lake War Relocation Center, one of ten concentration camps constructe ...
outside of
Tulelake Tulelake ( ) is a city in northeastern Siskiyou County, California, United States. The town is named after nearby Tule Lake. Its population is 902 as of the 2020 census, down from 1,010 from the 2010 census. Tulelake peace officers are authori ...
.


Other

*
Tilden Regional Park Charles Lee Tilden Regional Park, also known as Tilden Park or Tilden, [], is a regional park in the East Bay (San Francisco Bay Area), East Bay, part of the San Francisco Bay Area in California. It is between the Berkeley Hills and San Pablo R ...
* Alum Rock Park * Angel Island (California), Angel Island *
Bidwell Park Bidwell Park is a municipal park located in Chico, California. The park was established July 10, 1905, through the donation by Annie Bidwell, widow of Chico's founder, John Bidwell, of approximately of land to the City of Chico. Since that time, ...
* Big Basin Redwoods State Park *
Butano State Park Butano State Park is a state park in the U.S. state of California, showcasing the secluded redwood-filled canyon of Little Butano Creek, a tributary of Butano Creek in the Pescadero Creek watershed. Located in San Mateo County near Pescadero, ...
* Calaveras Big Trees State Park * Castle Rock State Park * Caswell Memorial State Park *
East Bay Regional Park District The East Bay Regional Park District (EBRPD) is a special district operating in Alameda County and Contra Costa County, California, within the East Bay area of the San Francisco Bay Area. It maintains and operates a system of regional parks which ...
*
Farallon Islands The Farallon Islands, or Farallones (from the Spanish ''farallón'' meaning "pillar" or "sea cliff"), are a group of islands and sea stacks in the Gulf of the Farallones, off the coast of San Francisco, California, United States. The isl ...
* Golden Gate Park *
Henry W. Coe State Park Henry W. Coe State Park (often known simply as Henry Coe or Coe Park) is a state park of California, United States, preserving a vast tract of the Diablo Range. The park is located closest to the city of Morgan Hill, and is located in both Sa ...
*
Humboldt Redwoods State Park Humboldt Redwoods State Park is a state park of California, United States, containing Rockefeller Forest, the world's largest remaining contiguous old-growth forest of coast redwoods. It is located south of Eureka, California, near Weott in s ...
* Jedediah Smith Redwoods State Park *
Lake Tahoe Basin Lake Tahoe (; was, Dáʔaw, meaning "the lake") is a freshwater lake in the Sierra Nevada of the United States. Lying at , it straddles the state line between California and Nevada, west of Carson City. Lake Tahoe is the largest alpine lake i ...
* Marble Mountain Wilderness * Mill Creek State Park * Mount Tamalpais State Park * Suisun Marsh *
Sacramento River The Sacramento River ( es, Río Sacramento) is the principal river of Northern California in the United States and is the largest river in California. Rising in the Klamath Mountains, the river flows south for before reaching the Sacramento� ...
* Talowa Dunes State Park *
Turtle Bay Exploration Park Turtle Bay Exploration Park, located in Redding, California, is a non-profit 300-acre gathering place featuring the Sundial Bridge, a museum, forestry and wildlife center, arboretum and botanical gardens. The park is located at gateway to the S ...
* McArthur–Burney Falls Memorial State Park *
Wilder Ranch State Park Wilder Ranch State Park is a California State Park on the Pacific Ocean coast north of Santa Cruz, California. The park was formerly a dairy ranch, and many of the ranch buildings have been restored for use as a museum. There are no campgrounds; ...
*
Sequoia National Park Sequoia National Park is an American national park in the southern Sierra Nevada east of Visalia, California. The park was established on September 25, 1890, and today protects of forested mountainous terrain. Encompassing a vertical relief ...


Educational institutions

Northern California hosts a number of world-renowned universities including
Stanford University Stanford University, officially Leland Stanford Junior University, is a private research university in Stanford, California. The campus occupies , among the largest in the United States, and enrolls over 17,000 students. Stanford is conside ...
and
University of California, Berkeley The University of California, Berkeley (UC Berkeley, Berkeley, Cal, or California) is a public land-grant research university in Berkeley, California. Established in 1868 as the University of California, it is the state's first land-grant un ...
. Top-tier public graduate schools include
Boalt Hall The University of California, Berkeley, School of Law (commonly known as Berkeley Law or UC Berkeley School of Law) is the law school of the University of California, Berkeley, a public research university in Berkeley, California. It is one ...
and
Hastings Hastings () is a large seaside town and borough in East Sussex on the south coast of England, east to the county town of Lewes and south east of London. The town gives its name to the Battle of Hastings, which took place to the north-west ...
law schools and UC San Francisco (a top-ranked medical school) and
UC Davis School of Veterinary Medicine The University of California, Davis, School of Veterinary Medicine is the largest veterinary school in the United States. Established in 1948, the school is the primary health resource for California's various animal populations. In 2020, the scho ...
, the largest veterinary school in the United States.


Public

* Six
University of California The University of California (UC) is a public land-grant research university system in the U.S. state of California. The system is composed of the campuses at Berkeley, Davis, University of California, Irvine, Irvine, University of Califor ...
campuses: :* UC Berkeley :*
UC Davis The University of California, Davis (UC Davis, UCD, or Davis) is a public land-grant research university near Davis, California. Named a Public Ivy, it is the northernmost of the ten campuses of the University of California system. The institu ...
:* UC Hastings :* UC Merced :* UC San Francisco :* UC Santa Cruz * Eleven California State University campuses: :* California Maritime Academy :*
Chico State California State University, Chico, or commonly, Chico State, is a public university in Chico, California. Founded in 1887, it is the second oldest campus in the California State University system. As of the fall 2020 semester, the university had ...
:*
CSU East Bay California State University, East Bay (Cal State East Bay, CSU East Bay, or CSUEB) is a public university in Hayward, California. The university is part of the 23-campus California State University system and offers 136 undergraduate and 60 post ...
:* CSU Monterey Bay :* Fresno State :* Humboldt State :*
Sacramento State California State University, Sacramento (CSUS, Sacramento State, or informally Sac State) is a public university in Sacramento, California. Founded in 1947 as Sacramento State College, it is the eleventh oldest school in the 23-campus California ...
:* San Francisco State :* San Jose State :*
Sonoma State Sonoma State University (SSU, Sonoma State, or Sonoma) is a public university in Rohnert Park in Sonoma County, California, US. It is one of the smallest members of the California State University (CSU) system. Sonoma State offers 92 Bachelor's ...
:* Stanislaus State * A large number of local community colleges


Private

''(Partial list)'' *
Brandman University University of Massachusetts Global (UMass Global), formerly Brandman University, is a private university with 25 campuses throughout California and Washington and a virtual campus. The university offers more than 90 degree, certificate, cre ...
* Dominican University * Drexel University Sacramento * Fresno Pacific University * Holy Names University *
Mills College Mills College at Northeastern University is a private college in Oakland, California and part of Northeastern University's global university system. Mills College was founded as the Young Ladies Seminary in 1852 in Benicia, California; it w ...
*
Northwestern Polytechnic University Northwestern Polytechnic University (NPU) is a private, non profit university in Fremont, California. Founded in 1984, the university awards bachelor's and master's degrees in computer science, engineering, technology and management programs. ...
* Pacific Union College *
Stanford University Stanford University, officially Leland Stanford Junior University, is a private research university in Stanford, California. The campus occupies , among the largest in the United States, and enrolls over 17,000 students. Stanford is conside ...
* Santa Clara University *
St. Mary's College Saint Mary's College (in French, ''Collège Sainte-Marie''), is the name of several colleges and schools: Australia *St Mary's College, Ipswich, an all-girls Catholic school in Queensland *St Mary's College, Maryborough, a co-educational school i ...
* Simpson University * Touro University California * University of San Francisco * University of the Pacific *
William Jessup University William Jessup University is a private Christian university in Rocklin, California, with an additional site in San Jose, California. The university had 1,743 students during the 2019–20 academic year, over 1650 being full-time equivalents. Foun ...
* Academy of Art University * Notre Dame de Namur University * Samuel Merritt University


Research

''(Partial list)'' *
American Institute of Mathematics The American Institute of Mathematics (AIM) is one of eight mathematical institutes in the United States, funded by the National Science Foundation (NSF). It was founded in 1994 by John Fry, co-founder of Fry's Electronics, and originally located ...
*
Bodega Marine Reserve Bodega Marine Reserve is a nature reserve and marine reserve on the coast of northern California, located in the vicinity of the Bodega Marine Laboratory on Bodega Head. It is a unit of the University of California Natural Reserve System, adm ...
* Hopkins Marine Station * Joint Genome Institute *
Lawrence Berkeley National Laboratory Lawrence Berkeley National Laboratory (LBNL), commonly referred to as the Berkeley Lab, is a United States national laboratory that is owned by, and conducts scientific research on behalf of, the United States Department of Energy. Located in ...
*
Lawrence Livermore National Laboratory Lawrence Livermore National Laboratory (LLNL) is a federal research facility in Livermore, California, United States. The lab was originally established as the University of California Radiation Laboratory, Livermore Branch in 1952 in response ...
* Lick Observatory * Long Marine Laboratory *
Mathematical Sciences Research Institute The Simons Laufer Mathematical Sciences Institute (SLMath), formerly the Mathematical Sciences Research Institute (MSRI), is an independent nonprofit mathematical research institution on the University of California campus in Berkeley, Calif ...
*
Monterey Bay Aquarium Research Institute The Monterey Bay Aquarium Research Institute (MBARI) is a private, non-profit oceanographic research center in Moss Landing, California. MBARI was founded in 1987 by David Packard, and is primarily funded by the David and Lucile Packard Founda ...
* NASA Ames Research Center * Owens Valley Radio Observatory * Pacific Institute *
Point Reyes Bird Observatory Point Blue Conservation Science, founded as and formerly named the Point Reyes Bird Observatory (PRBO), is a California-based wildlife conservation and research non-profit organization. Overview Point Blue was founded in 1965 to study bird migr ...
* White Mountain Research Station


Counties

*
Alameda An alameda is a street or path lined with trees () and may refer to: Places Canada * Alameda, Saskatchewan, town in Saskatchewan ** Grant Devine Dam, formerly ''Alameda Dam'', a dam and reservoir in southern Saskatchewan Chile * Alameda (Santia ...
*
Alpine Alpine may refer to any mountainous region. It may also refer to: Places Europe * Alps, a European mountain range ** Alpine states, which overlap with the European range Australia * Alpine, New South Wales, a Northern Village * Alpine National P ...
* Amador *
Butte __NOTOC__ In geomorphology, a butte () is an isolated hill with steep, often vertical sides and a small, relatively flat top; buttes are smaller landforms than mesas, plateaus, and tablelands. The word ''butte'' comes from a French word me ...
* Calaveras * Colusa * Contra Costa * Del Norte *
El Dorado El Dorado (, ; Spanish for "the golden"), originally ''El Hombre Dorado'' ("The Golden Man") or ''El Rey Dorado'' ("The Golden King"), was the term used by the Spanish in the 16th century to describe a mythical tribal chief (''zipa'') or king ...
* Fresno * Glenn * Humboldt *
Inyo Inyo may refer to: Places California * Inyo County, California * Inyo National Forest, USA * The Inyo Mountains * The Mono–Inyo Craters Other uses * Japanese for yin and yang Yin and yang ( and ) is a Chinese philosophical concep ...
*
Kings Kings or King's may refer to: *Monarchs: The sovereign heads of states and/or nations, with the male being kings *One of several works known as the "Book of Kings": **The Books of Kings part of the Bible, divided into two parts **The ''Shahnameh'' ...
*
Lake A lake is an area filled with water, localized in a basin, surrounded by land, and distinct from any river or other outlet that serves to feed or drain the lake. Lakes lie on land and are not part of the ocean, although, like the much large ...
*
Lassen Lassen is a Danish language, Danish and Norwegian language, Norwegian patronymic surname meaning "son of Lars" (equivalent of Laurentius), and thus a parallel form of the more common surname Larsen. Notable people with the surname include: * Ander ...
* Madera * Marin * Mariposa * Mendocino *
Merced Merced (; Spanish for "Mercy") is a city in, and the county seat of, Merced County, California, United States, in the San Joaquin Valley. As of the 2020 Census, the city had a population of 86,333, up from 78,958 in 2010. Incorporated on Apri ...
* Modoc *
Mono Mono may refer to: Common meanings * Infectious mononucleosis, "the kissing disease" * Monaural, monophonic sound reproduction, often shortened to mono * Mono-, a numerical prefix representing anything single Music Performers * Mono (Japanes ...
* Monterey * Napa *
Nevada Nevada ( ; ) is a U.S. state, state in the Western United States, Western region of the United States. It is bordered by Oregon to the northwest, Idaho to the northeast, California to the west, Arizona to the southeast, and Utah to the east. N ...
* Placer * Plumas *
Sacramento ) , image_map = Sacramento County California Incorporated and Unincorporated areas Sacramento Highlighted.svg , mapsize = 250x200px , map_caption = Location within Sacramento ...
* San Benito *
San Francisco San Francisco (; Spanish for " Saint Francis"), officially the City and County of San Francisco, is the commercial, financial, and cultural center of Northern California. The city proper is the fourth most populous in California and 17t ...
* San Joaquin * San Mateo * Santa Clara * Santa Cruz * Shasta * Sierra * Siskiyou * Solano * Sonoma * Stanislaus * Sutter * Tehama *
Trinity The Christian doctrine of the Trinity (, from 'threefold') is the central dogma concerning the nature of God in most Christian churches, which defines one God existing in three coequal, coeternal, consubstantial divine persons: God th ...
* Tulare * Tuolumne * Yolo * Yuba


Regions

The following regions are entirely or partly within northern California: *
Big Sur Big Sur () is a rugged and mountainous section of the Central Coast of California between Carmel and San Simeon, where the Santa Lucia Mountains rise abruptly from the Pacific Ocean. It is frequently praised for its dramatic scenery. Big Sur ...
* Cascade Range * Central California * Central Coast * Central Valley * Coastal California * East Bay (SF) * Eastern California *
Emerald Triangle The Emerald Triangle is a region in Northern California, named as such due to it being the largest cannabis-producing region in the United States. The region includes three counties in an upside-down triangular configuration: * Humboldt County, ...
* Gold Country * Greater Sacramento * Klamath Basin * Lake Tahoe * Lassen Peak *
Lost Coast The Lost Coast is a mostly natural and undeveloped area of the California North Coast in Humboldt and Mendocino Counties, which includes the King Range. It was named the "Lost Coast" after the area experienced depopulation in the 1930s. In a ...
* Metropolitan Fresno *
Mount Shasta Mount Shasta ( Shasta: ''Waka-nunee-Tuki-wuki''; Karuk: ''Úytaahkoo'') is a potentially active volcano at the southern end of the Cascade Range in Siskiyou County, California. At an elevation of , it is the second-highest peak in the Cascad ...
* North Bay (SF) * North Coast * Russian River * Sacramento Valley *
San Francisco Bay Area The San Francisco Bay Area, often referred to as simply the Bay Area, is a populous region surrounding the San Francisco, San Pablo, and Suisun Bay estuaries in Northern California. The Bay Area is defined by the Association of Bay Area G ...
* San Francisco Peninsula *
San Joaquin Valley The San Joaquin Valley ( ; es, Valle de San Joaquín) is the area of the Central Valley of the U.S. state of California that lies south of the Sacramento–San Joaquin River Delta and is drained by the San Joaquin River. It comprises seven ...
* Santa Clara Valley * Shasta Cascade *
Sierra Nevada The Sierra Nevada () is a mountain range in the Western United States, between the Central Valley of California and the Great Basin. The vast majority of the range lies in the state of California, although the Carson Range spur lies primar ...
*
Silicon Valley Silicon Valley is a region in Northern California that serves as a global center for high technology and innovation. Located in the southern part of the San Francisco Bay Area, it corresponds roughly to the geographical areas San Mateo Cou ...
* South Bay (SF) * Telecom Valley * Tri-Valley * Trinity Alps *
Wine Country Wine Country is the region of California, in the northern San Francisco Bay Area, known worldwide as a premier wine-growing region. The region is famed for its wineries, its cuisine, Michelin star restaurants, boutique hotels, luxury resor ...
* Yosemite * Yuba–Sutter area


Cities and towns with more than 50,000 inhabitants

city proper) in northern California"> File:San Jose California Skyline.jpg, 1 – San Jose File:SF From Marin Highlands3.jpg, 2 –
San Francisco San Francisco (; Spanish for " Saint Francis"), officially the City and County of San Francisco, is the commercial, financial, and cultural center of Northern California. The city proper is the fourth most populous in California and 17t ...
File:Fresno skyline.jpg, 3 – Fresno File:Tower Bridge Sacramento edit.jpg, 4 –
Sacramento ) , image_map = Sacramento County California Incorporated and Unincorporated areas Sacramento Highlighted.svg , mapsize = 250x200px , map_caption = Location within Sacramento ...
File:Oakland California skyline.jpg, 5 – Oakland File:Commercial & Savings Bank - Stockton, CA.jpg, 6 – Stockton File:Mission-Peak-2006.jpg, 7 – Fremont File:Modesto Arch.JPG, 8 –
Modesto Modesto () is the county seat and largest city of Stanislaus County, California, United States. With a population of 218,464 at the 2020 census, it is the 19th largest city in the state of California and forms part of the Sacramento-Stockton ...
File:SR vineyard.jpg, 9 –
Santa Rosa Santa Rosa is the Italian, Portuguese and Spanish name for Saint Rose. Santa Rosa may also refer to: Places Argentina * Santa Rosa, Mendoza, a city * Santa Rosa, Tinogasta, Catamarca * Santa Rosa, Valle Viejo, Catamarca *Santa Rosa, La Pampa * S ...
File:Laguna Springs Dr and Laguna Blvd.jpg, 10 – Elk Grove File:Main Street, Salinas.jpg, 11 – Salinas File:Hayward City Hall number 3 front.jpg, 12 – Hayward File:Murphystreetsunnyvale.jpg, 13 –
Sunnyvale Sunnyvale () is a city located in the Santa Clara Valley in northwest Santa Clara County in the U.S. state of California. Sunnyvale lies along the historic El Camino Real and Highway 101 and is bordered by portions of San Jose to the nort ...
File:Roseville - City Civic Center.jpg, 14 – Roseville File:Visalia Transit 2011.jpg, 15 – Visalia File:Santaclaraconventioncenter.jpg, 16 – Santa Clara File:DK From Parking Lot.jpg, 17 – Vallejo File:Todos Santos Plaza (Concord, California) Dec 2009.jpg, 18 –
Concord Concord may refer to: Meaning "agreement" * Pact or treaty, frequently between nations (indicating a condition of harmony) * Harmony, in music * Agreement (linguistics), a change in the form of a word depending on grammatical features of other ...
File:Berkeley-downtown-Bay-bridge-SF-in-back-from-Lab.jpg, 19 – Berkeley File:Pollasky Ave. Clovis.JPG, 20 – Clovis File:Aerial view of Fairfield, California.jpg, 21 – Fairfield File:Point Richmond, Richmond, California.jpg, 22 –
Richmond Richmond most often refers to: * Richmond, Virginia, the capital of Virginia, United States * Richmond, London, a part of London * Richmond, North Yorkshire, a town in England * Richmond, British Columbia, a city in Canada * Richmond, Californi ...
File:Shannon-Williamson Ranch (Antioch, CA).JPG, 23 –
Antioch Antioch on the Orontes (; grc-gre, Ἀντιόχεια ἡ ἐπὶ Ὀρόντου, ''Antiókheia hē epì Oróntou'', Learned ; also Syrian Antioch) grc-koi, Ἀντιόχεια ἡ ἐπὶ Ὀρόντου; or Ἀντιόχεια ἡ ἐπ� ...
File:MCB-san-mateo-aerial.jpg, 24 – San Mateo File:Daly City.jpg, 25 –
Daly City Daly City () is the second most populous city in San Mateo County, California, United States, with population of 104,901 according to the 2020 census. Located in the San Francisco Bay Area, and immediately south of San Francisco (sharing its ...
File:Aerial view of Vacaville, California.jpg, 26 –
Vacaville Vacaville is a city located in Solano County in Northern California. Sitting approximately from Sacramento and from San Francisco, it is within the Sacramento Valley. As of the 2020 census, Vacaville had a population of 102,386, making it th ...
File:Bidwell Park Chico.jpg, 27 – Chico File:Sundialbridge2.jpg, 28 – Redding File:11th and Central Tracy California 14-May-2006.jpg, 29 – Tracy File:San Leandro Marina 07830.JPG, 30 – San Leandro File:LLNL Aerial View.jpg, 31 – Livermore File:Citrus Heights - Police.jpg, 32 –
Citrus Heights Citrus Heights is a city in Sacramento County, California. As of the 2020 U.S. Census, the city had a population of 87,583, up from 83,301 at the 2010 U.S. Census. History Citrus Heights voters approved the measure to incorporate the City on No ...
File:Merced Theatre.JPG, 33 –
Merced Merced (; Spanish for "Mercy") is a city in, and the county seat of, Merced County, California, United States, in the San Joaquin Valley. As of the 2020 Census, the city had a population of 86,333, up from 78,958 in 2010. Incorporated on Apri ...
File:SanRamonPanorama.jpg, 34 – San Ramon File:Redwoodcitypanorama.jpg, 35 – Redwood City File:MantecaCA.jpg, 36 – Manteca File:Mountainviewcentennialplaza.jpg, 37 – Mountain View File:Lake Folsom.JPG, 38 –
Folsom Folsom may refer to: People * Folsom (surname) Places in the United States * Folsom, Perry County, Alabama * Folsom, Randolph County, Alabama * Folsom, California * Folsom, Georgia * Folsom, Louisiana * Folsom, Missouri * Folsom, New Jerse ...
File:Footbridge to Great Mall Main station, March 2018 (cropped).JPG, 39 –
Milpitas Milpitas (Spanish for "little milpas") is a city in Santa Clara County, California, in Silicon Valley. As of the 2020 census, the city population was 80,273. The city's origins lie in Rancho Milpitas, granted to Californio ranchero José Mar� ...
File:MCB-pleasanton-ca.jpg, 40 – Pleasanton


Metropolitan areas

Northern California is home to three of the state's four extended metropolitan areas, which are home to over three-fourths of the region's population as of the
2010 United States Census The United States census of 2010 was the twenty-third United States national census. National Census Day, the reference day used for the census, was April 1, 2010. The census was taken via mail-in citizen self-reporting, with enumerators serving ...
:


Major business districts

The following are major central business districts: * San Francisco Financial District * Downtown Oakland *
Downtown Sacramento Downtown Sacramento is the central business district of the city of Sacramento. Downtown is generally defined as the area south of the American River, east of the Sacramento River, north of Broadway, and west of 16th Street. The central business ...
* Downtown San Jose


Transportation

''See also articles:'' * Transportation in the Sacramento metropolitan area * Transportation in the San Francisco Bay Area ''See also categories:'' * Transportation in Alameda County * Transportation in Alpine County * Transportation in Amador County * Transportation in Butte County * Transportation in Calaveras County * Transportation in Colusa County * Transportation in Contra Costa County * Transportation in Del Norte County * Transportation in El Dorado County * Transportation in Fresno County * Transportation in Glenn County * Transportation in Humboldt County * Transportation in Inyo County * Transportation in Kings County * Transportation in Lake County * Transportation in Lassen County * Transportation in Madera County * Transportation in Marin County * Transportation in Mariposa County * Transportation in Mendocino County * Transportation in Merced County * Transportation in Modoc County * Transportation in Mono County * Transportation in Monterey County * Transportation in Napa County * Transportation in Nevada County * Transportation in Oakland * Transportation in Placer County * Transportation in Plumas County * Transportation in Sacramento * Transportation in Sacramento County * Transportation in San Benito County * Transportation in the San Francisco Bay Area * Transportation in San Francisco * Transportation in San Joaquin County * Transportation in San Mateo County * Transportation in Santa Clara County * Transportation in Santa Cruz County * Transportation in Shasta County * Transportation in Sierra County * Transportation in Siskiyou County * Transportation in Solano County * Transportation in Sonoma County * Transportation in Stanislaus County * Transportation in Sutter County * Transportation in Tehama County * Transportation in Trinity County * Transportation in Tulare County * Transportation in Tuolumne County * Transportation in Yolo County * Transportation in Yuba County


Airports

There are 11 airports in Northern California categorized as Primary Service Commercial airports by the FAA:


Railroad

* Bay Area Rapid Transit (BART) – commuter subway connecting most of the core Bay Area including
San Francisco San Francisco (; Spanish for " Saint Francis"), officially the City and County of San Francisco, is the commercial, financial, and cultural center of Northern California. The city proper is the fourth most populous in California and 17t ...
, Oakland, and San Jose * Caltrain – commuter rail between San Francisco and Gilroy (south of San Jose) * Muni Metro (San Francisco) *
VTA Light Rail VTA Light Rail is a light rail system in San Jose and nearby cities in Santa Clara County, California. It is operated by the Santa Clara Valley Transportation Authority, or VTA, and consists of of network comprising three main lines on stand ...
(San Jose) * Altamont Commuter Express (ACE) – commuter train connecting Stockton and the Central Valley with San Jose and the Bay Area * Sacramento Regional Transit District light rail *
Amtrak The National Railroad Passenger Corporation, doing business as Amtrak () , is the national passenger railroad company of the United States. It operates inter-city rail service in 46 of the 48 contiguous U.S. States and nine cities in Canada. ...
: ** ''
California Zephyr The ''California Zephyr'' is a passenger train operated by Amtrak between Chicago and the San Francisco Bay Area (at Emeryville), via Omaha, Denver, Salt Lake City, and Reno. At , it is Amtrak's longest daily route, and second-longest overall ...
'' – connects
Chicago (''City in a Garden''); I Will , image_map = , map_caption = Interactive Map of Chicago , coordinates = , coordinates_footnotes = , subdivision_type = List of sovereign states, Count ...
to the Bay Area ** '' Capitol Corridor'' – San Jose to Auburn (eastern suburb of Sacramento) ** '' Coast Starlight'' – coastal train between
Los Angeles Los Angeles ( ; es, Los Ángeles, link=no , ), often referred to by its initials L.A., is the largest city in the state of California and the second most populous city in the United States after New York City, as well as one of the world ...
and
Seattle Seattle ( ) is a seaport city on the West Coast of the United States. It is the seat of King County, Washington. With a 2020 population of 737,015, it is the largest city in both the state of Washington and the Pacific Northwest region o ...
with northern California stops in San Jose, Oakland, and Sacramento ** '' San Joaquin'' – Central Valley train linking
Bakersfield Bakersfield is a city in Kern County, California, United States. It is the county seat and largest city of Kern County. The city covers about near the southern end of the San Joaquin Valley and the Central Valley region. Bakersfield's populat ...
in the Central Valley to Sacramento and Oakland


Major transit organizations

*
AC Transit AC Transit (Alameda-Contra Costa Transit District) is an Oakland-based public transit agency serving the western portions of Alameda and Contra Costa counties in the East Bay of the San Francisco Bay Area. AC Transit also operates "Transbay" r ...
*
Arcata and Mad River Transit System Arcata and Mad River Transit System (AMRTS) is a fixed-route bus service for Arcata, California Arcata (; Wiyot: ''Goudi’ni''; Yurok: ''Oket'oh'') is a city adjacent to the Arcata Bay (northern) portion of Humboldt Bay in Humboldt County, ...
*
County Connection The County Connection (officially, the Central Contra Costa Transit Authority, CCCTA) is a Concord-based public transit agency operating fixed-route bus and ADA paratransit (County Connection LINK) service in and around central Contra Costa Count ...
* El Dorado Transit *
Eureka Transit Service The Eureka Transit Service is the city fixed-route bus system in Eureka, California. ETS operates four weekday routes between downtown Eureka, Bayshore Mall, Henderson Center, Myrtletown, Cutten, and Pine Hill. Three routes operate on Saturdays. B ...
*
Fairfield and Suisun Transit Fairfield and Suisun Transit (FAST) provides general public fixed route bus service through eight local and two intercity/commuter routes. All FAST buses are wheelchair accessible and most are equipped with bike racks. In , the system had a ride ...
* Fresno Area Express * Golden Gate Transit * Lake Transit *
Mendocino Transit Authority The Mendocino Transit Authority (MTA) is a public bus system that serves Ukiah, the Mendocino Valley, and coastal regions of Mendocino County, California. MTA began service in 1976 under a joint powers agreement between the County of Mendoc ...
* Monterey-Salinas Transit * Porterville City Operated Local Transit *
Redwood Transit System The Redwood Transit System is a commuter transit service that operates Monday-Saturday on the Highway 101 corridor between Trinidad and Garberville in Humboldt County, California, and also serves Westhaven, McKinleyville, Arcata, Eureka, Fields La ...
*
SamTrans SamTrans (stylized as samTrans; officially the San Mateo County Transit District) is a public transport agency in and around San Mateo, California, in the San Francisco Bay Area. It provides bus service throughout San Mateo County and into porti ...
* San Benito Express * SF MUNI *
San Joaquin Regional Transit District San Joaquin Regional Transit District (known as "San Joaquin RTD" or simply as RTD) is a transit district that provides bus service to the city of Stockton, California and the surrounding communities of Lodi, Ripon, Thornton, French Camp, La ...
* Santa Clara Valley Transportation Authority (VTA) *
Santa Cruz Metro Santa Cruz Metropolitan Transit District (SCMTD), or simply Santa Cruz METRO, provides bus service throughout Santa Cruz County, California. In , the system had a ridership of , or about per weekday as of . Santa Cruz METRO also operates the Hig ...
*
Solano Express SolanoExpress is a public transit network of regional express buses connecting Solano County, California to Contra Costa County (across the Carquinez Strait) and the Sacramento Valley. It is managed by the Solano Transportation Authority and oper ...
*
SolTrans SolTrans, officially Solano County Transit, is a Joint Powers Authority that provides public transportation service to the southern Solano County cities of Vallejo and Benicia. SolTrans was established in 2011 and is the result of a merger bet ...
* Sonoma County Transit * Tri Delta Transit * Visalia Transit *
VINE (Napa County) VINE Transit is a public transportation service in Napa County, California, United States; it is managed under the Napa Valley Transportation Authority and operated by Transdev. The system offers extensive service throughout the county along wit ...


Major transit ferries

* San Francisco Bay Ferry *
Golden Gate Ferry Golden Gate Ferry is a commuter ferry service operated by the Golden Gate Bridge, Highway and Transportation District in San Francisco Bay, part of the Bay Area of Northern California, United States. Regular service is run to the Ferry Buildin ...
* Blue & Gold Fleet * Angel Island – Tiburon Ferry


Freeways


Interstate highways

*
Interstate 80 Interstate 80 (I-80) is an east–west transcontinental freeway that crosses the United States from downtown San Francisco, California, to Teaneck, New Jersey, in the New York metropolitan area. The highway was designated in 1956 as one ...
(Eastshore Freeway/Lincoln Highway) * Interstate 280 (Southern Embarcadero Freeway/Southern Freeway/Junipero Serra Freeway/Sinclair Freeway) * Interstate 380 * Interstate 580 (Eastshore Freeway/MacArthur Freeway/Brown Freeway) * Interstate 680 (Joseph P. Sinclair Freeway/Donald D. Doyle Highway/Blue Star Memorial Highway/Luther E. Gibson Freeway) *
Interstate 780 Interstate 780 (I-780) is an east–west auxiliary Interstate Highway in the San Francisco Bay Area of Northern California. It runs from Curtola Parkway and Lemon Street in Vallejo to I-680 just north of the Benicia–Martinez Bridge in ...
* Interstate 880 (Nimitz Freeway) *
Interstate 980 Interstate 980 (I-980) is a short auxiliary Interstate Highway entirely within Oakland in Northern California, connecting I-580 and State Route 24 (SR 24) to I-880 near Downtown Oakland. I-980 passes the Oakland Convention Cen ...
(Grove-Shafter Freeway) *
Interstate 238 Route 238, consisting of State Route 238 (SR 238) and Interstate 238 (I-238), is a mostly north–south state and auxiliary Interstate highway in the San Francisco Bay Area of California. The southern segment is signed as SR ...
* Interstate 5 (Golden State Freeway/West Side Freeway) * Interstate 205 (Robert T. Monagan Freeway) *
Interstate 505 Interstate 505 (I-505) is a north–south auxiliary Interstate Highway in the Sacramento Valley in Northern California. It is a spur auxiliary route of I-5 that runs from near Dunnigan south to I-80 in Vacaville. I-505 is primarily a ru ...
* Interstate 80 Business (Capital City Freeway)


U.S. Routes

* U.S. Route 6 * U.S. Route 50 (El Dorado Freeway) *
U.S. Route 101 U.S. Route 101, or U.S. Highway 101 (US 101), is a north–south United States Numbered Highway that runs through the states of California, Oregon, and Washington, on the West Coast of the United States. It is also known as (The Royal Roa ...
(South Valley Freeway/Bayshore Freeway/James Lick Freeway/Central Freeway/Redwood Highway/Michael J. Burns Freeway/Redwood Highway) *
U.S. Route 395 U.S. Route 395 (US 395) is a U.S. Route in the western United States. The southern terminus of the route is in the Mojave Desert at Interstate 15 near Hesperia. The northern terminus is at the Canada–US border near Laurier, where the road ...
*
U.S. Route 97 U.S. Route 97 (US 97) is a major north–south route of the United States Numbered Highway System in the Pacific Northwest region. It runs for approximately through the states of California, Oregon, and Washington, primarily serving i ...
* U.S. Route 199


Principal state highways

* State Route 1 (Pacific Coast Highway/Cabrillo Highway) * State Route 3 * State Route 4 * State Route 9 * State Route 12 * State Route 13 (Ashby Avenue/Tunnel Road/Warren Freeway) * State Route 16 * State Route 17 * State Route 20 * State Route 24 * State Route 25 * State Route 26 * State Route 29 * State Route 32 * State Route 33 * State Route 35 (Skyline Boulevard) * State Route 36 * State Route 37 (Sears Point Tollway) * State Route 41 (E.G. Lewis Highway, Yosemite Freeway, Southern Yosemite Highway, Wawona Road) * State Route 43 * State Route 44 * State Route 49 (Golden Chain Highway) * State Route 59 * // State Route 61 (Webster Tube/Posey Tube/Doolittle Drive/Davis Street) * State Route 63 * State Route 65 *
State Route 68 The following highways are numbered 68: Australia * Channel Highway (Tasmania) * NSW (Multiple routes) Canada * Alberta Highway 68 * Manitoba Highway 68 * Ontario Highway 68 Chile *Chile Route 68 India * National Highway 68 (India) Korea ...
* State Route 70 * State Route 82 (Monterey Highway/El Camino Real/Mission Street) * State Route 84 * State Route 85 (Stevens Creek Freeway/West Valley Freeway/Norman Y. Mineta Highway/CHP Officer Scott M. Greenly Memorial Freeway) * State Route 87 (Guadalupe Parkway) * State Route 88 *
State Route 89 The following highways are numbered 89: Canada * Manitoba Highway 89 * Highway 89 (Ontario) Israel * Highway 89 (Israel) United States * Interstate 89 ** Interstate 87 (North Carolina–Virginia) (former proposal) * U.S. Route 89 * Alabama Stat ...
* State Route 92 (J. Arthur Younger Freeway/Jackson Street) * State Route 96 * State Route 99 * State Route 104 * State Route 108 * State Route 113 * State Route 116 * State Route 120 * State Route 121 * State Route 128 * State Route 130 * State Route 132 * State Route 137 * State Route 139 * State Route 140 * State Route 152 * State Route 156 * State Route 160 (North Sacramento Freeway/River Road) * State Route 162 * State Route 165 * State Route 168 * State Route 174 * State Route 180 * / State Route 185 (International Boulevard/East 14th Street/Mission Boulevard) * State Route 190 * State Route 193 * State Route 198 * State Route 201 * State Route 216 * State Route 219 * State Route 236 * State Route 237 * State Route 238 (Mission Boulevard, Foothill Boulevard) * State Route 245 * State Route 254 (Avenue of the Giants) * State Route 262 (Mission Boulevard) * State Route 267 * State Route 269 * State Route 275 (Tower Bridge Gateway) * State Route 299


Communication


Telephone area codes

*
209 Year 209 ( CCIX) was a common year starting on Sunday (link will display the full calendar) of the Julian calendar. At the time, it was known as the Year of the Consulship of Commodus and Lollianus (or, less frequently, year 962 ''Ab urbe condi ...
 — Northern
San Joaquin Valley The San Joaquin Valley ( ; es, Valle de San Joaquín) is the area of the Central Valley of the U.S. state of California that lies south of the Sacramento–San Joaquin River Delta and is drained by the San Joaquin River. It comprises seven ...
( Stockton,
Modesto Modesto () is the county seat and largest city of Stanislaus County, California, United States. With a population of 218,464 at the 2020 census, it is the 19th largest city in the state of California and forms part of the Sacramento-Stockton ...
, and
Merced Merced (; Spanish for "Mercy") is a city in, and the county seat of, Merced County, California, United States, in the San Joaquin Valley. As of the 2020 Census, the city had a population of 86,333, up from 78,958 in 2010. Incorporated on Apri ...
). * 408/669 — Most of
Santa Clara County Santa Clara County, officially the County of Santa Clara, is the sixth-most populous county in the U.S. state of California, with a population of 1,936,259, as of the 2020 census. Santa Clara County and neighboring San Benito County together ...
( San Jose and Gilroy). * 415/628 —
San Francisco San Francisco (; Spanish for " Saint Francis"), officially the City and County of San Francisco, is the commercial, financial, and cultural center of Northern California. The city proper is the fourth most populous in California and 17t ...
,
Daly City Daly City () is the second most populous city in San Mateo County, California, United States, with population of 104,901 according to the 2020 census. Located in the San Francisco Bay Area, and immediately south of San Francisco (sharing its ...
, and Marin County. One of the three original Area Codes in California. * 510/341 — Inner East Bay ( Oakland, Berkeley,
Richmond Richmond most often refers to: * Richmond, Virginia, the capital of Virginia, United States * Richmond, London, a part of London * Richmond, North Yorkshire, a town in England * Richmond, British Columbia, a city in Canada * Richmond, Californi ...
, and Fremont). Originally part of area code 415. * 530 — A large northeastern section of the region including
Tehama County Tehama County ( ; Wintun for "high water") is a county located in the northern part of the U.S. state of California. As of the 2020 census, the population was 65,829. The county seat and largest city is Red Bluff. Tehama County comprises the ...
, Shasta County, Lassen County,
Yuba County Yuba County (; Maidu: ''Yubu'') is a county in the U.S. state of California. As of the 2020 U.S. Census, the population was 81,575. The county seat is Marysville. Yuba County is included in the Yuba City, California Metropolitan Statistical ...
,
Sutter County Sutter County is a county located in the U.S. state of California. As of the 2020 census, the population was 99,633. The county seat is Yuba City. Sutter County is included in the Yuba City, CA Metropolitan Statistical Area as well as the Sacra ...
, Butte County, and Nevada County. Split from area code 916 in 1997–1998. * 559 — Southern
San Joaquin Valley The San Joaquin Valley ( ; es, Valle de San Joaquín) is the area of the Central Valley of the U.S. state of California that lies south of the Sacramento–San Joaquin River Delta and is drained by the San Joaquin River. It comprises seven ...
( Madera, Fresno, and Visalia). *
650 __NOTOC__ Year 650 (DCL) was a common year starting on Friday (link will display the full calendar) of the Julian calendar. The denomination 650 for this year has been used since the early medieval period, when the Anno Domini calendar era beca ...
 — San Francisco Peninsula ( San Mateo, Redwood City, and Palo Alto). Originally part of area code 415. * 707 — The North Coast section of the region from Sonoma County to the
Oregon Oregon () is a U.S. state, state in the Pacific Northwest region of the Western United States. The Columbia River delineates much of Oregon's northern boundary with Washington (state), Washington, while the Snake River delineates much of it ...
border. Cities include Eureka, Ukiah,
Santa Rosa Santa Rosa is the Italian, Portuguese and Spanish name for Saint Rose. Santa Rosa may also refer to: Places Argentina * Santa Rosa, Mendoza, a city * Santa Rosa, Tinogasta, Catamarca * Santa Rosa, Valle Viejo, Catamarca *Santa Rosa, La Pampa * S ...
, Napa, Vallejo and Fairfield. *
831 __NOTOC__ Year 831 ( DCCCXXXI) was a common year starting on Sunday (link will display the full calendar) of the Julian calendar. Events By place Byzantine Empire * Byzantine–Arab War: Emperor Theophilos invades the Abbasid dominio ...
 — Monterey, San Benito and Santa Cruz Counties. Originally part of area code 408. * 916/279 — Sacramento County and the
Sacramento ) , image_map = Sacramento County California Incorporated and Unincorporated areas Sacramento Highlighted.svg , mapsize = 250x200px , map_caption = Location within Sacramento ...
suburbs in western Placer and El Dorado Counties. One of the three original area codes in California, formerly covered all areas now within 530. *
925 Year 925 ( CMXXV) was a common year starting on Saturday (link will display the full calendar) of the Julian calendar. Events By place Byzantine Empire * May 15 – Nicholas I Mystikos, twice the Ecumenical Patriarch of Constanti ...
 — Outer East Bay (
Concord Concord may refer to: Meaning "agreement" * Pact or treaty, frequently between nations (indicating a condition of harmony) * Harmony, in music * Agreement (linguistics), a change in the form of a word depending on grammatical features of other ...
, Pittsburg, Walnut Creek, San Ramon, Pleasanton and Livermore). Originally part of area codes 415 and 510.For current information, se
nanpa.com
the North American Numbering Plan Administration site.


Sports


Major league professional sports teams


College sports teams

*
California Golden Bears The California Golden Bears are the athletic teams that represent the University of California, Berkeley. Referred to in athletic competition as ''California'' or ''Cal'', the university fields 30 varsity athletic programs and various club tea ...
* Cal Poly Humboldt Lumberjacks *
Stanford Cardinal The Stanford Cardinal are the athletic teams that represent Stanford University. As of June, 2022, Stanford's program has won 131 NCAA team championships. Stanford has won at least one NCAA team championship each academic year for 46 consecutive ...
*
Fresno State Bulldogs The Fresno State Bulldogs are the intercollegiate athletic teams that represent California State University, Fresno (commonly referred to as Fresno State). The university is a member of NCAA Division I's Mountain West Conference (MW). It was a ...
* San Jose State Spartans *
Sacramento State Hornets The Sacramento State Hornets (also Sac State) represent California State University, Sacramento in Sacramento, the capital city of the U.S. state of California, in intercollegiate athletics. The school fields 21 teams including men and women's b ...
*
UC Davis Aggies The UC Davis Aggies (also referred to as the Ags or Aggies) are the athletic teams that represent the University of California, Davis. Seventeen of the school's 25 intercollegiate sports - baseball, men's basketball, men's cross country, men's ...


Sports venues

*
Laguna Seca Raceway Laguna Seca Raceway (branded as WeatherTech Raceway Laguna Seca, and previously Mazda Raceway Laguna Seca) is a paved road racing track in central California used for both auto racing and motorcycle racing, built in 1957 near both Salinas and ...
(motorsport) * Sonoma Raceway (motorsport) *
Olympic Club The Olympic Club is an athletic club and private social club in San Francisco, California. First named the "San Francisco Olympic Club", it is the oldest athletic club in the United States. Established on May 6, 1860, its first officers were ...
(golf) *
Silverado Country Club The Silverado Resort and Spa is a golf, tennis, and spa resort in Napa County, California, United States. The venue is named after the Silverado Mine, a quicksilver mine near Mount Saint Helena. The resort is the fifth largest employer in Napa ...
(golf) *
TPC Harding Park TPC Harding Park, formerly Harding Park Golf Club and commonly known as Harding Park, is a municipal golf course on the West Coast of the United States, located in western San Francisco, California. It is owned by the city and county of It i ...
(golf) * TPC Stonebrae (golf)


Sporting events

* Pac-12 Football Championship Game (college football) *
Emerald Bowl The San Francisco Bowl was an annual postseason college football bowl game certified by the NCAA and played in the San Francisco Bay Area. Originally named the Diamond Walnut San Francisco Bowl during its first two editions from 2002 to 2003, it ...
(college football) *
AT&T Pebble Beach Pro-Am The AT&T Pebble Beach Pro-Am is a professional golf tournament on the PGA Tour, held annually at Pebble Beach, California, near Carmel. The tournament is usually held during the month of February on three different courses, currently Pebble Bea ...
(golf) * Frys.com Open (golf) *
Swinging Skirts LPGA Classic The Swinging Skirts LPGA Classic was a women's professional golf tournament in California on the LPGA Tour, held at Lake Merced Golf Club in Daly City, an adjacent suburb south of San Francisco. It debuted in April 2014, but ran for just thre ...
(golf) * Grand Prix of Sonoma (motorsport) * Toyota/Save Mart 350 (motorsport) * Monterey Sports Car Championships (motorsport) * Superbike World Championship (motorsport)


See also

* Northern California Megaregion * California megapolitan areas * Central California *
History of California through 1899 Human history in California began when Indigenous peoples of the Americas, indigenous Americans first arrived some 13,000 years ago. Coastal exploration by the Spanish began in the 16th century, with further European colonization of the Americas ...
*
History of the west coast of North America The human history of the west coast of North America is believed to stretch back to the arrival of the earliest people over the Bering Strait, or alternately along a now-submerged coastal plain, through the development of significant pre-Columbi ...
* Jefferson (proposed Pacific state) * Megaregions of the United States *
Southern California Southern California (commonly shortened to SoCal) is a geographic and cultural region that generally comprises the southern portion of the U.S. state of California. It includes the Los Angeles metropolitan area, the second most populous urban ...


References


External links

* *Real Estate Engineering and Architect Service in California. {{Authority control Megapolitan areas of California Regions of California