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Northern California (commonly shortened to NorCal) is a geocultural region that comprises the northern portion of the U.S. state of
California California () is a U.S. state, state in the Western United States that lies on the West Coast of the United States, Pacific Coast. It borders Oregon to the north, Nevada and Arizona to the east, and shares Mexico–United States border, an ...
, spanning the northernmost 48 of the state's 58 counties. Northern California in its largest definition is determined by dividing the state into two regions, the other being
Southern California Southern California (commonly shortened to SoCal) is a geographic and Cultural area, cultural List of regions of California, region that generally comprises the southern portion of the U.S. state of California. Its densely populated coastal reg ...
. The main northern population centers include the
San Francisco Bay Area The San Francisco Bay Area, commonly known as the Bay Area, is a List of regions of California, region of California surrounding and including San Francisco Bay, and anchored by the cities of Oakland, San Francisco, and San Jose, California, S ...
(anchored by the cities of San Jose,
San Francisco San Francisco, officially the City and County of San Francisco, is a commercial, Financial District, San Francisco, financial, and Culture of San Francisco, cultural center of Northern California. With a population of 827,526 residents as of ...
, and Oakland), the Greater Sacramento area (anchored by the state capital Sacramento), the Redding, California, 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, including Yosemite Valley and part of
Lake Tahoe Lake Tahoe (; Washo language, Washo: ''dáʔaw'') is a Fresh water, freshwater lake in the Sierra Nevada of the Western United States, straddling the border between California and Nevada. Lying at above sea level, Lake Tahoe is the largest a ...
, Mount Shasta (the second-highest peak in the Cascade Range after Mount Rainier in Washington), and most of the Central Valley, one of the world's most productive agricultural regions. Northern California is also home to Silicon Valley, the global headquarters for several of the largest most powerful companies in the world, including Alphabet Inc. (Google),
Apple An apple is a round, edible fruit produced by an apple tree (''Malus'' spp.). Fruit trees of the orchard or domestic apple (''Malus domestica''), the most widely grown in the genus, are agriculture, cultivated worldwide. The tree originated ...
, Meta, and Nvidia. The Northern California Megaregion, one of the 11 megaregions of the United States is centered in Northern California, and extends from Metropolitan Fresno north to Greater Sacramento, and from the Bay Area east across the Nevada state line to encompass the entire
Lake Tahoe Lake Tahoe (; Washo language, Washo: ''dáʔaw'') is a Fresh water, freshwater lake in the Sierra Nevada of the Western United States, straddling the border between California and Nevada. Lying at above sea level, Lake Tahoe is the largest a ...
Reno 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


North–south divisions of California

California experienced a population boom during its gold rush (1848–1855), bringing more than 300,000 new residents, with very few of these settling in the southern part of the state. The northern two-thirds of the state was seen as the main part, and was often referred to as simply "California", while the southern third was called "Southern California". At that time, the state was profoundly divided by the Tehachapi Mountains which were a barrier to travelers before highways were built, and remain a bioregion barrier. This geographical barrier curves from Point Conception at the Pacific Ocean eastward through the Transverse Ranges including Mount Pinos and Tejon Pass, continuing through the Tehachapi Mountains including Tehachapi Pass, then cutting northward through the southern Sierra Nevada mountain range to Mount Patterson and the Nevada border. The Mojave Desert and the Great Basin Desert are separated from Northern California by mountain ranges in this definition of bioregions. Southern California in the 1850s was a backwater of mainly Spanish-speaking Californios who resented paying state taxes without receiving state projects. In 1859, as proposed by the Californio politician Andrés Pico, the California State Legislature passed the Pico Act aiming to divide the state and create a new territory in the south. The border between the two parts was to be a straight line set at a latitude of six standard parallels south of Mount Diablo—meaning 144 miles south of Mount Diablo at the latitude of 35°45'N, currently the border between Monterey and San Luis Obispo counties. The new southern portion was to be called the Territory of Colorado because much of its eastern border was the
Colorado River The Colorado River () is one of the principal rivers (along with the Rio Grande) in the Southwestern United States and in northern Mexico. The river, the List of longest rivers of the United States (by main stem), 5th longest in the United St ...
. This legislation was signed by Governor John B. Weller and sent to the
United States Congress The United States Congress is the legislature, legislative branch of the federal government of the United States. It is a Bicameralism, bicameral legislature, including a Lower house, lower body, the United States House of Representatives, ...
for ratification, but it never came to a vote. Congress was too divided with tensions which would soon break out into the
American Civil War The American Civil War (April 12, 1861May 26, 1865; also known by Names of the American Civil War, other names) was a civil war in the United States between the Union (American Civil War), Union ("the North") and the Confederate States of A ...
, and despite the efforts of Senator Milton Latham, the bill died. However, the proposed east-west line continued to define one of the views of north–south division of the state. "Northern California" may refer to the state's northernmost 48 counties, using the line established by the Pico Act, or it may refer to the portion north of the geographic barrier formed by the Transverse Ranges, the Tehachapi Mountains, and the Southern Sierras. 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 are usually placed in northern California. Some observers describe three partitions of California, with north and south sections separated by Central California. Technically, California's exact north–south midway division is around 37°N, near the latitude of Morgan Hill and Chowchilla. The geographic center of California is at near North Fork, northeast of Fresno. 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, commonly known as the Bay Area, is a List of regions of California, region of California surrounding and including San Francisco Bay, and anchored by the cities of Oakland, San Francisco, and San Jose, California, S ...
and 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.


Popular usage

The coastal area north of the Bay Area is often referred to as the North Coast, touching the counties of Mendocino,
Lake A lake is often a naturally occurring, relatively large and fixed body of water on or near the Earth's surface. It is localized in a basin or interconnected basins surrounded by dry land. Lakes lie completely on land and are separate from ...
, Humboldt, and Del Norte. The interior region north of Sacramento metropolitan area is referred to by locals as the Northstate, consisting of about 20 counties. "Northern California" was used by Tim Draper as the name of the northernmost state to be created by splitting California into three new states. The bill, Cal 3, was prevented from appearing on the 2018 California ballot because of a constitutional review by the Supreme Court of California.


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 a round, edible fruit produced by an apple tree (''Malus'' spp.). Fruit trees of the orchard or domestic apple (''Malus domestica''), the most widely grown in the genus, are agriculture, cultivated worldwide. The tree originated ...
,
Hewlett-Packard The Hewlett-Packard Company, commonly shortened to Hewlett-Packard ( ) or HP, was an American multinational information technology company. It was founded by Bill Hewlett and David Packard in 1939 in a one-car garage in Palo Alto, California ...
,
Google Google LLC (, ) is an American multinational corporation and technology company focusing on online advertising, search engine technology, cloud computing, computer software, quantum computing, e-commerce, consumer electronics, and artificial ...
,
Yahoo! Yahoo (, styled yahoo''!'' in its logo) is an American web portal that provides the search engine Yahoo Search and related services including My Yahoo, Yahoo Mail, Yahoo News, Yahoo Finance, Yahoo Sports, y!entertainment, yahoo!life, and its a ...
, and eBay), 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 chemical substance whose atoms all have the same number of protons. The number of protons is called the atomic number of that element. For example, oxygen has an atomic number of 8: each oxygen atom has 8 protons in its ...
s, to breakthroughs in microchip technology. Cultural contributions include the works of Ansel Adams, George Lucas, and
Clint Eastwood Clinton Eastwood Jr. (born May 31, 1930) is an American actor and film director. After achieving success in the Western (genre), Western TV series ''Rawhide (TV series), Rawhide'', Eastwood rose to international fame with his role as the "Ma ...
, as well as beatniks, the Summer of Love, winemaking, 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 Genentech, Inc. is an American biotechnology corporation headquartered in South San Francisco, California. It operates as an independent subsidiary of holding company Roche. Genentech Research and Early Development operates as an independent cent ...
(development and commercialization of genetic engineering) to CrossFit 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 by square meters,
Travis Air Force Base Travis Air Force Base is a United States Air Force base under the operational control of Air Mobility Command (AMC), located three miles (5 Kilometre, km) east of the central business district of the city of Fairfield, California, Fairfield, i ...
.


Cities

Northern California's largest
metropolitan area A metropolitan area or metro is a region consisting of a densely populated urban area, urban agglomeration and its surrounding territories which share Industry (economics), industries, commercial areas, Transport infrastructure, transport network ...
is the
San Francisco Bay Area The San Francisco Bay Area, commonly known as the Bay Area, is a List of regions of California, region of California surrounding and including San Francisco Bay, and anchored by the cities of Oakland, San Francisco, and San Jose, California, S ...
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, officially the City and County of San Francisco, is a commercial, Financial District, San Francisco, financial, and Culture of San Francisco, cultural center of Northern California. With a population of 827,526 residents as of ...
, Oakland, and their many suburbs. 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, Stockton, Fresno, Turlock and Modesto. These cities in the central part of the Central Valley and Sierra Nevada foothills may be viewed as part of a single
megalopolis A megalopolis () or a supercity, also called a megaregion, is a group of metropolitan areas which are perceived as a continuous urban area through common systems of transport, economy, resources, ecology, and so on. They are integrated enough ...
. 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 most populous metropolitan area in the U.S. state of California, encompassing five counties in Southern California extending from Ventura County in the west to San Bernardino County and Riverside County in the east, ...
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, commonly known as the Bay Area, is a List of regions of California, region of California surrounding and including San Francisco Bay, and anchored by the cities of Oakland, San Francisco, and San Jose, California, S ...
, and the 13th most populous city in the United States. SanFran downtown panorama.jpg,
San Francisco San Francisco, officially the City and County of San Francisco, is a commercial, Financial District, San Francisco, financial, and Culture of San Francisco, cultural center of Northern California. With a population of 827,526 residents as of ...
, the second most populated city in Northern California and a major economic, cultural, and financial center for the region. File:Chukchansi.jpg, Fresno, the fourth most populated city in northern California, as seen from Chukchansi Park. Fresno is the largest city by population in the San Joaquin Valley. File:Sacramento Skyline (cropped).jpg, alt=Sacramento Skyline (cropped).jpg, Sacramento, the third most populous city in Northern California, the capital city of the State of
California California () is a U.S. state, state in the Western United States that lies on the West Coast of the United States, Pacific Coast. It borders Oregon to the north, Nevada and Arizona to the east, and shares Mexico–United States border, an ...
, and the principal city of the Sacramento metropolitan area. 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 known as Black Americans and formerly also called Afro-Americans, are an Race and ethnicity in the United States, American racial and ethnic group that consists of Americans who have total or partial ancestry from an ...
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 Americans in the United States, Native American groups indigenous to what is now Northern California, who traditionally spoke one of the Miwok lan ...
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 Juan Rodríguez Cabrillo (; 1497 – January 3, 1543) was a Portuguese maritime explorer best known for investigations of the west coast of North America, undertaken on behalf of the Spanish Empire. He was the first European to explore presen ...
, 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 United States. It is a part of the Western U.S., with the Columbia River delineating much of Oregon's northern boundary with Washington (state), Washington, while t ...
. Beginning in 1565, the Spanish
Manila galleon The Manila galleon (; ) refers to the Spain, Spanish trading Sailing ship, ships that linked the Philippines in the Spanish East Indies to Mexico (New Spain), across the Pacific Ocean. The ships made one or two round-trip voyages per year betwe ...
s crossed the Pacific Ocean from
Mexico Mexico, officially the United Mexican States, is a country in North America. It is the northernmost country in Latin America, and borders the United States to the north, and Guatemala and Belize to the southeast; while having maritime boundar ...
to the Spanish
Philippines The Philippines, officially the Republic of the Philippines, is an Archipelagic state, archipelagic country in Southeast Asia. Located in the western Pacific Ocean, it consists of List of islands of the Philippines, 7,641 islands, with a tot ...
, 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 ( 1540 – 28 January 1596) was an English Exploration, explorer and privateer best known for making the Francis Drake's circumnavigation, second circumnavigation of the world in a single expedition between 1577 and 1580 (bein ...
who landed north of today's
San Francisco San Francisco, officially the City and County of San Francisco, is a commercial, Financial District, San Francisco, financial, and Culture of San Francisco, cultural center of Northern California. With a population of 827,526 residents as of ...
and claimed the area for England. In 1602, the Spaniard Sebastián Vizcaíno explored California's coast as far north as
Monterey Bay Monterey Bay is a bay of the Pacific Ocean located on the coast of the U.S. state of California, south of the San Francisco Bay Area. San Francisco itself is further north along the coast, by about 75 miles (120 km), accessible via California S ...
, 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, officially the City and County of San Francisco, is a commercial, Financial District, San Francisco, financial, and Culture of San Francisco, cultural center of Northern California. With a population of 827,526 residents as of ...
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, officially the Free and Sovereign State of Baja California, is a state in Mexico. It is the northwesternmost of the 32 federal entities of Mexico. Before becoming a state in 1952, the area was known as the North Territory of B ...
). In 1786, the French 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 Californios (singular Californio) are Californians of Spaniards, Spanish descent, especially those descended from settlers of the 17th through 19th centuries before California was annexed by the United States. California's Spanish language in C ...
s'' (Spanish-speaking Californians) in these settlements primarily traded cattle hides and tallow with American and European merchant vessels. In 1825, the
Hudson's Bay Company The Hudson's Bay Company (HBC), originally the Governor and Company of Adventurers of England Trading Into Hudson’s Bay, is a Canadian holding company of department stores, and the oldest corporation in North America. It was the owner of the ...
established a major trading post just north of today's
Portland, Oregon Portland ( ) is the List of cities in Oregon, most populous city in the U.S. state of Oregon, located in the Pacific Northwest region. Situated close to northwest Oregon at the confluence of the Willamette River, Willamette and Columbia River, ...
. 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 Switzerland, officially the Swiss Confederation, is a landlocked country located in west-central Europe. It is bordered by Italy to the south, France to the west, Germany to the north, and Austria and Liechtenstein to the east. Switzerland ...
, who was granted centered on the area of today's 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 United States. It is a part of the Western U.S., with the Columbia River delineating much of Oregon's northern boundary with Washington (state), Washington, while t ...
. 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. Also in 1841, an overland exploratory party of the United States Exploring Expedition came down the Siskiyou Trail from the Pacific Northwest. In 1846, the
Donner Party The Donner Party, sometimes called the Donner–Reed Party, was a group of American pioneers who migrated to California interim government, 1846-1850, California in a wagon train from the Midwest. Delayed by a multitude of mishaps, they spent ...
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 (Spanish language, Spanish: ''guerra de Estados Unidos-México, guerra mexicano-estadounidense''), also known in the United States as the Mexican War, and in Mexico as the United States intervention in Mexico, ...
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 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 ordered his naval forces to occupy Yerba Buena (present
San Francisco San Francisco, officially the City and County of San Francisco, is a commercial, Financial District, San Francisco, financial, and Culture of San Francisco, cultural center of Northern California. With a population of 827,526 residents as of ...
) on July 7 and within days American forces controlled San Francisco, Sonoma, and Sutter's Fort in Sacramento. The
treaty A treaty is a formal, legally binding written agreement between sovereign states and/or international organizations that is governed by international law. A treaty may also be known as an international agreement, protocol, covenant, convention ...
ending the Mexican–American War was signed on February 2, 1848, and Mexico formally ceded
Alta California Alta California (, ), also known as Nueva California () among other names, was a province of New Spain formally established in 1804. Along with the Baja California peninsula, it had previously comprised the province of , but was made a separat ...
(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; it has chemical symbol Au (from Latin ) and atomic number 79. In its pure form, it is a brightness, bright, slightly orange-yellow, dense, soft, malleable, and ductile metal. Chemically, gold is a transition metal ...
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, officially the City and County of San Francisco, is a commercial, Financial District, San Francisco, financial, and Culture of San Francisco, cultural center of Northern California. With a population of 827,526 residents as of ...
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, although t ...
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 steamships ...
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 There is no generally accepted definition of Indigenous peoples, although in the 21st century the focus has been on self-identification, cultural difference from other groups in a state, a special relationship with their traditional territ ...
so that they could look for gold on their land. 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. 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 America's first transcontinental railroad (known originally as the "Pacific Railroad" and later as the "Overland Route (Union Pacific Railroad), Overland Route") was a continuous railroad line built between 1863 and 1869 that connected the exis ...
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 (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. Though no official boundary exists, the most common ...
. Almost all of these railways came under the control of the
Southern Pacific Railroad The Southern Pacific (or Espee from the railroad initials) was an American Railroad classes#Class I, Class I Rail transport, railroad network that existed from 1865 to 1996 and operated largely in the Western United States. The system was oper ...
, 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 consists of computer programs that instruct the Execution (computing), execution of a computer. Software also includes design documents and specifications. The history of software is closely tied to the development of digital comput ...
,
semiconductor A semiconductor is a material with electrical conductivity between that of a conductor and an insulator. Its conductivity can be modified by adding impurities (" doping") to its crystal structure. When two regions with different doping level ...
/micro-electronics,
biotechnology Biotechnology is a multidisciplinary field that involves the integration of natural sciences and Engineering Science, engineering sciences in order to achieve the application of organisms and parts thereof for products and services. Specialists ...
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. 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. It was created on December 23, 1913, with the enactment of the Federal Reserve Act, after a series of ...
and 9th Circuit Court.


Climate

Northern California has a warm or mild to cool climate, in which the Sierra mountains 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 °F (10–15 °C) to 30s °F (−1 – +4 °C) in the winters while summers temperature range is 90s °F (32–37 °C) to 60s °F (15–20 °C) or 50s °F (10–15 °C), with highs well into the 100s °F (37–42 °C) for the Sacramento region. Snow covers the mountains (generally above ) 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 A wildfire, forest fire, or a bushfire is an unplanned and uncontrolled fire in an area of Combustibility and flammability, combustible vegetation. Depending on the type of vegetation present, a wildfire may be more specifically identified as a ...
have increased in frequency as a consequence of
climate change Present-day climate change includes both global warming—the ongoing increase in Global surface temperature, global average temperature—and its wider effects on Earth's climate system. Climate variability and change, Climate change in ...
.


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 (1 September 1939 – 2 September 1945) was a World war, global conflict between two coalitions: the Allies of World War II, Allies and the Axis powers. World War II by country, Nearly all of the wo ...
. 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 and the
Cold War The Cold War was a period of global Geopolitics, geopolitical rivalry between the United States (US) and the Soviet Union (USSR) and their respective allies, the capitalist Western Bloc and communist Eastern Bloc, which lasted from 1947 unt ...
–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 a List of national parks of the United States, national park of the United States in California. It is bordered on the southeast by Sierra National Forest and on the northwest by Stanislaus National Forest. The p ...
, which is displayed on the reverse side of the California state quarter. Other prominent parks are the Kings Canyon- Sequoia National Park 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 a national park of the United States 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 sect ...
.


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 A devil is the personification of evil as it is conceived in many and various cultures and religious traditions. Devil or Devils may also refer to: * Satan * Devil in Christianity * Demon * Folk devil Art, entertainment, and media Film and ...
, Lava Beds National Monument, Point Reyes National Seashore, the Monterey Bay National Marine Sanctuary, and the Cordell Bank and Gulf of the Farallones 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 The National Wildlife Refuge System (NWRS) is a system of protected areas of the United States managed by the United States Fish and Wildlife Service (FWS), an agency within the United States Department of the Interior, Department of the Interi ...
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, 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, Granite Chief, and Desolation wilderness areas. In addition, the California Coastal National Monument 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 Alcatraz Island () is a small island about 1.25 miles offshore from San Francisco in San Francisco Bay, California, near the Golden Gate, Golden Gate Strait. The island was developed in the mid-19th century with facilities for a Alcatraz Isla ...
, the Golden Gate National Recreation Area, Whiskeytown–Shasta–Trinity National Recreation Area, and the Smith River National Recreation Area. The NPS also administers the Manzanar National Historic Site in Inyo County, the Rosie the Riveter World War II Home Front National Historical Park in Richmond, and the
Tule Lake National Monument The Tule Lake War Relocation Center, also known as the Tule Lake Segregation Center, was an Internment of Japanese Americans, American concentration camp located in Modoc County, California, Modoc and Siskiyou County, California, Siskiyou count ...
outside of Tulelake.


Other

* Tilden Regional Park * Alum Rock Park * Angel Island * Bidwell Park * Big Basin Redwoods State Park * Butano State Park * Calaveras Big Trees State Park * Castle Rock State Park * Caswell Memorial State Park * East Bay Regional Park District * Farallon Islands *
Golden Gate Park Golden Gate Park is an urban park between the Richmond District, San Francisco, Richmond and Sunset District, San Francisco, Sunset districts on the West Side (San Francisco), West Side of San Francisco, California, United States. It is the Lis ...
* Henry W. Coe State Park * Humboldt Redwoods State Park * Jedediah Smith Redwoods State Park * Lake Tahoe Basin * Marble Mountain Wilderness * Mill Creek State Park * Mount Tamalpais State Park *
Suisun Marsh Located in northern California, the Suisun Marsh ( ) has been referred to as the largest brackish water marsh on west coast of the United States of America. The marsh land is part of a tidal estuary, and subject to tidal ebb and flood. The marsh ...
* Sacramento River * Talowa Dunes State Park * Turtle Bay Exploration Park * McArthur–Burney Falls Memorial State Park * Wilder Ranch State Park * Sequoia National Park


Educational institutions

Northern California hosts a number of world-renowned universities including
Stanford University Leland Stanford Junior University, commonly referred to as Stanford University, is a Private university, private research university in Stanford, California, United States. It was founded in 1885 by railroad magnate Leland Stanford (the eighth ...
and
University of California, Berkeley The University of California, Berkeley (UC Berkeley, Berkeley, Cal, or California), is a Public university, public Land-grant university, land-grant research university in Berkeley, California, United States. Founded in 1868 and named after t ...
. Top-tier public graduate schools include Boalt Hall and
Hastings Hastings ( ) is a seaside town and Borough status in the United Kingdom, borough in East Sussex on the south coast of England, east of Lewes and south east of London. The town gives its name to the Battle of Hastings, which took place to th ...
law schools and UC San Francisco (a top-ranked medical school) and UC Davis School of Veterinary Medicine, the largest veterinary school in the United States.


Public

* Six
University of California The University of California (UC) is a public university, public Land-grant university, land-grant research university, research university system in the U.S. state of California. Headquartered in Oakland, California, Oakland, the system is co ...
campuses: :*
UC Berkeley The University of California, Berkeley (UC Berkeley, Berkeley, Cal, or California), is a public land-grant research university in Berkeley, California, United States. Founded in 1868 and named after the Anglo-Irish philosopher George Berkele ...
:*
UC Davis The University of California, Davis (UC Davis, UCD, or Davis) is a Public university, public Land-grant university, land-grant research university in Davis, California, United States. It is the northernmost of the ten campuses of the University ...
:* UC Hastings :* UC Merced :* UC San Francisco :* UC Santa Cruz * Eleven California State University campuses: :* California Maritime Academy :* Chico State :* CSU East Bay :*
CSU Monterey Bay California State University, Monterey Bay (CSUMB or Cal State Monterey Bay) is a public university located in Monterey County, California, United States. The main campus is situated on the site of the former military base Fort Ord, spanning the ...
:* Fresno State :* Cal Poly Humboldt :* Sacramento State :* San Francisco State :* San Jose State :* Sonoma State :* Stanislaus State * A large number of local
community colleges A community college is a type of undergraduate higher education institution, generally leading to an associate degree, certificate, or diploma. The term can have different meanings in different countries: many community colleges have an open en ...


Private

''(Partial list)'' * Academy of Art University * California College of the Arts * Dominican University of California * Fresno Pacific University * Golden Gate University * Jessup University * Menlo College * Northwestern Polytechnic University * Notre Dame de Namur University * Pacific Union College * Samuel Merritt University * Santa Clara University *
Saint Mary's College of California Saint Mary's College of California is a Private college, private Catholic college in Moraga, California, United States. Established in 1863, it is administered by the De La Salle Brothers. The college offers undergraduate and graduate programs w ...
* Simpson University *
Stanford University Leland Stanford Junior University, commonly referred to as Stanford University, is a Private university, private research university in Stanford, California, United States. It was founded in 1885 by railroad magnate Leland Stanford (the eighth ...
* Touro University California *
University of San Francisco The University of San Francisco (USF) is a Private university, private Society of Jesus, Jesuit university in San Francisco, California, United States. Founded in 1855, it has nearly 9,000 students pursuing undergraduate and graduate degrees ...
* University of the Pacific


Research

''(Partial list)'' * American Institute of Mathematics * Bodega Marine Reserve * Hopkins Marine Station * Joint Genome Institute * Lawrence Berkeley National Laboratory *
Lawrence Livermore National Laboratory Lawrence Livermore National Laboratory (LLNL) is a Federally funded research and development centers, federally funded research and development center in Livermore, California, United States. Originally established in 1952, the laboratory now i ...
*
Lick Observatory The Lick Observatory is an astronomical observatory owned and operated by the University of California. It is on the summit of Mount Hamilton (California), Mount Hamilton, in the Diablo Range just east of San Jose, California, United States. The ...
* Long Marine Laboratory * Mathematical Sciences Research Institute * Monterey Bay Aquarium Research Institute * NASA Ames Research Center * Owens Valley Radio Observatory * Pacific Institute * Point Reyes Bird Observatory * White Mountain Research Station


Counties

* Alameda * Alpine * Amador *
Butte 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 table (landform), tablelands. The word ''butte'' comes from the French l ...
* Calaveras * Colusa * Contra Costa * Del Norte * El Dorado * Fresno * Glenn * Humboldt * Inyo * Kings *
Lake A lake is often a naturally occurring, relatively large and fixed body of water on or near the Earth's surface. It is localized in a basin or interconnected basins surrounded by dry land. Lakes lie completely on land and are separate from ...
* Lassen * Madera * Marin * Mariposa * Mendocino * Merced * Modoc * Mono * Monterey * Napa *
Nevada Nevada ( ; ) is a landlocked state in the Western United States. It borders Oregon to the northwest, Idaho to the northeast, California to the west, Arizona to the southeast, and Utah to the east. Nevada is the seventh-most extensive, th ...
* Placer * Plumas *
Sacramento Sacramento ( or ; ; ) is the capital city of the U.S. state of California and the seat of Sacramento County. Located at the confluence of the Sacramento and American Rivers in Northern California's Sacramento Valley, Sacramento's 2020 p ...
* San Benito *
San Francisco San Francisco, officially the City and County of San Francisco, is a commercial, Financial District, San Francisco, financial, and Culture of San Francisco, cultural center of Northern California. With a population of 827,526 residents as of ...
* San Joaquin * San Mateo * Santa Clara * Santa Cruz * Shasta * Sierra * Siskiyou * Solano * Sonoma * Stanislaus * Sutter * Tehama *
Trinity The Trinity (, from 'threefold') is the Christian doctrine concerning the nature of God, which defines one God existing in three, , consubstantial divine persons: God the Father, God the Son (Jesus Christ) and God the Holy Spirit, thr ...
* Tulare * Tuolumne * Yolo * Yuba


Regions

The following regions are entirely or partly within northern California: * Big Sur * Cascade Range * Central California * Central Coast * Central Valley * Coastal California * East Bay (SF) * Eastern California * Emerald Triangle * Gold Country * Greater Sacramento * Klamath Basin *
Lake Tahoe Lake Tahoe (; Washo language, Washo: ''dáʔaw'') is a Fresh water, freshwater lake in the Sierra Nevada of the Western United States, straddling the border between California and Nevada. Lying at above sea level, Lake Tahoe is the largest a ...
* Lassen Peak * Lost Coast * Metropolitan Fresno * Mount Shasta * North Bay (SF) * North Coast * Russian River * Sacramento Valley *
San Francisco Bay Area The San Francisco Bay Area, commonly known as the Bay Area, is a List of regions of California, region of California surrounding and including San Francisco Bay, and anchored by the cities of Oakland, San Francisco, and San Jose, California, S ...
* San Francisco Peninsula * San Joaquin Valley * Santa Clara Valley *
Shasta Cascade The Shasta Cascade region of California is located in the northeastern and north-central sections of the state bordering Oregon and Nevada, including far northern parts of the Central Valley (California), Central Valley and the Sierra Nevada mou ...
*
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 primari ...
* Silicon Valley * South Bay (SF) * Telecom Valley * Tri-Valley * Trinity Alps * Wine Country * Yosemite * Yuba–Sutter area


Cities and towns with more than 50,000 inhabitants

city proper A city proper is the geographical area contained within city limits. The term ''proper'' is not exclusive to city, cities; it can describe the geographical area within the boundaries of any given locality. The United Nations defines the term as " ...
) in northern California"> File:San Jose California Skyline.jpg, 1 – San Jose File:SF From Marin Highlands3.jpg, 2 –
San Francisco San Francisco, officially the City and County of San Francisco, is a commercial, Financial District, San Francisco, financial, and Culture of San Francisco, cultural center of Northern California. With a population of 827,526 residents as of ...
File:Fresno skyline.jpg, 3 – Fresno File:Tower Bridge Sacramento edit.jpg, 4 – 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 File:SR vineyard.jpg, 9 – Santa Rosa 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 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 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 File:Shannon-Williamson Ranch (Antioch, CA).JPG, 23 –
Antioch Antioch on the Orontes (; , ) "Antioch on Daphne"; or "Antioch the Great"; ; ; ; ; ; ; . was a Hellenistic Greek city founded by Seleucus I Nicator in 300 BC. One of the most important Greek cities of the Hellenistic period, it served as ...
File:MCB-san-mateo-aerial.jpg, 24 – San Mateo File:Daly City.jpg, 25 – Daly City File:Aerial view of Vacaville, California.jpg, 26 – Vacaville 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:Downtown Livermore California.jpg, 31 - Livermore File:Citrus Heights - Police.jpg, 32 – Citrus Heights File:Merced Theatre.JPG, 33 – Merced 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 File:Footbridge to Great Mall Main station, March 2018 (cropped).JPG, 39 – Milpitas 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:


Major business districts

The following are major central business districts: * San Francisco Financial District * Downtown Oakland * Downtown Sacramento * 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, officially the City and County of San Francisco, is a commercial, Financial District, San Francisco, financial, and Culture of San Francisco, cultural center of Northern California. With a population of 827,526 residents as of ...
, Oakland, and San Jose *
Caltrain Caltrain (reporting mark JPBX) is a commuter rail line in California, serving the San Francisco Peninsula and Santa Clara Valley (Silicon Valley). The southern terminus is in San Jose, California, San Jose at the Tamien station with weekday r ...
– commuter rail between San Francisco and Gilroy (south of San Jose) * Muni Metro (San Francisco) * VTA light rail (San Jose) * Altamont Corridor 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, Trade name, doing business as Amtrak (; ), is the national Passenger train, passenger railroad company of the United States. It operates intercity rail service in 46 of the 48 contiguous United Stat ...
: ** ''
California Zephyr The ''California Zephyr'' is a Amtrak Long Distance, long-distance passenger train operated by Amtrak between Chicago, Illinois, Chicago and the San Francisco Bay Area (at Emeryville station, Emeryville), via Omaha, Nebraska, Omaha, Denver, Sa ...
'' – connects
Chicago Chicago is the List of municipalities in Illinois, most populous city in the U.S. state of Illinois and in the Midwestern United States. With a population of 2,746,388, as of the 2020 United States census, 2020 census, it is the List of Unite ...
to the Bay Area ** '' Capitol Corridor'' – San Jose to Auburn (eastern suburb of Sacramento) ** '' Coast Starlight'' – coastal train between
Los Angeles Los Angeles, often referred to by its initials L.A., is the List of municipalities in California, most populous city in the U.S. state of California, and the commercial, Financial District, Los Angeles, financial, and Culture of Los Angeles, ...
and
Seattle Seattle ( ) is the most populous city in the U.S. state of Washington and in the Pacific Northwest region of North America. With a population of 780,995 in 2024, it is the 18th-most populous city in the United States. The city is the cou ...
with northern California stops in San Jose, Oakland, and Sacramento ** '' San Joaquin'' – Central Valley train linking Bakersfield in the Central Valley to Sacramento and Oakland


Major transit organizations

* AC Transit * Arcata and Mad River Transit System * County Connection * El Dorado Transit * Eureka Transit Service * Fairfield and Suisun Transit * Fresno Area Express * Golden Gate Transit * Lake Transit * Mendocino Transit Authority * Monterey-Salinas Transit * Porterville City Operated Local Transit * Redwood Transit System * SamTrans * San Benito Express * SF MUNI * San Joaquin Regional Transit District *
Santa Clara Valley Transportation Authority The Santa Clara Valley Transportation Authority, more commonly known simply as the Valley Transportation Authority (VTA), is a Special district (United States), special district responsible for public transit services, Congestion management agen ...
(VTA) * Santa Cruz Metro * Solano Express * SolTrans * Sonoma County Transit * Tri Delta Transit * Visalia Transit * VINE (Napa County)


Major transit ferries

* San Francisco Bay Ferry * Golden Gate Ferry * Blue & Gold Fleet * Angel Island – Tiburon Ferry


Freeways


Interstate highways

* Interstate 80 (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 880 (Nimitz Freeway) * Interstate 980 (Grove-Shafter Freeway) * Interstate 238 *
Interstate 5 Interstate 5 (I-5) is the main north–south Interstate Highway System, Interstate Highway on the West Coast of the United States, running largely parallel to the Pacific coast of the contiguous U.S. from Mexico to Canada. It travels thro ...
(Golden State Freeway/West Side Freeway) * Interstate 205 (Robert T. Monagan Freeway) * Interstate 505 * Interstate 80 Business (Capital City Freeway)


U.S. Routes

* U.S. Route 6 *
U.S. Route 50 U.S. Route 50 or U.S. Highway 50 (US 50) is a major east–west route of the U.S. Highway system, stretching from Interstate 80 (I-80) in West Sacramento, California, to Maryland Route 528 (MD 528) in Ocean City, Maryland, on the Atlantic ...
(El Dorado Freeway) * U.S. Route 101 (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 97 * 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 * 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 * 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 — Northern San Joaquin Valley ( Stockton, Modesto, and Merced). * 408/669 — Most of Santa Clara County ( San Jose and Gilroy). * 415/628 —
San Francisco San Francisco, officially the City and County of San Francisco, is a commercial, Financial District, San Francisco, financial, and Culture of San Francisco, cultural center of Northern California. With a population of 827,526 residents as of ...
, Daly City, and Marin County. One of the three original
Area Codes A telephone numbering plan is a type of numbering scheme used in telecommunication to assign telephone numbers to subscriber telephones or other telephony endpoints. Telephone numbers are the addresses of participants in a telephone network, reach ...
in California. * 510/341 — Inner
East Bay The East Bay is the eastern region of the San Francisco Bay Area and includes cities along the eastern shores of San Francisco Bay and San Pablo Bay. The region has grown to include inland communities in Alameda and Contra Costa counties. Wi ...
( Oakland, Berkeley, Richmond, and Fremont). Originally part of area code 415. * 530 — A large northeastern section of the region including Tehama County, Shasta County, Lassen County, Yuba County, Sutter County, Butte County, and Nevada County. Split from area code 916 in 1997–1998. * 559 — Southern San Joaquin Valley ( Madera, Fresno, and Visalia). * 650 — San Francisco Peninsula ( San Mateo, Redwood City, and
Palo Alto Palo Alto ( ; Spanish language, Spanish for ) is a charter city in northwestern Santa Clara County, California, United States, in the San Francisco Bay Area, named after a Sequoia sempervirens, coastal redwood tree known as El Palo Alto. Th ...
). 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 United States. It is a part of the Western U.S., with the Columbia River delineating much of Oregon's northern boundary with Washington (state), Washington, while t ...
border. Cities include Eureka, Ukiah, Santa Rosa, Napa, Vallejo and Fairfield. *
831 __NOTOC__ Year 831 (Roman numerals, DCCCXXXI) was a common year starting on Sunday of the Julian calendar. Events By place Abbasid Empire and Byzantine Empire * Byzantine–Arab wars (780–1180)#Period of 780–842, Byzantine–Arab W ...
 — Monterey, San Benito and Santa Cruz Counties. Originally part of area code 408. * 916/279 — Sacramento County and the
Sacramento Sacramento ( or ; ; ) is the capital city of the U.S. state of California and the seat of Sacramento County. Located at the confluence of the Sacramento and American Rivers in Northern California's Sacramento Valley, Sacramento's 2020 p ...
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 — Outer
East Bay The East Bay is the eastern region of the San Francisco Bay Area and includes cities along the eastern shores of San Francisco Bay and San Pablo Bay. The region has grown to include inland communities in Alameda and Contra Costa counties. Wi ...
( Concord, 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 * Cal Poly Humboldt Lumberjacks * Stanford Cardinal * Fresno State Bulldogs * San Jose State Spartans * Sacramento State Hornets * UC Davis Aggies


Sports venues

* Laguna Seca Raceway (motorsport) *
Sonoma Raceway Sonoma Raceway (originally known as Sears Point Raceway, Golden State International Raceway and Infineon Technologies, Infineon Raceway) is a road course and dragstrip located at Sears Point in the southern Sonoma Mountains of Sonoma County, Cal ...
(motorsport) * Olympic Club (golf) * Silverado Country Club (golf) * TPC Harding Park (golf) * TPC Stonebrae (golf)


Sporting events

* Pac-12 Football Championship Game (college football) * Emerald Bowl (college football) * AT&T Pebble Beach Pro-Am (golf) * Frys.com Open (golf) * Swinging Skirts LPGA Classic (golf) * Grand Prix of Sonoma (motorsport) * Toyota/Save Mart 350 (motorsport) * Monterey Sports Car Championships (motorsport) *
Superbike World Championship Superbike World Championship (also known as WorldSBK, SBK, World Superbike, WSB, or WSBK) is a silhouette road racing series based on heavily modified production sports motorcycles. The championship was founded in . The Superbike World Champion ...
(motorsport)


See also

* Northern California Megaregion * California megapolitan areas * Central California * History of California through 1899 * History of the west coast of North America * Jefferson (proposed Pacific state) * Megaregions of the United States *
Southern California Southern California (commonly shortened to SoCal) is a geographic and Cultural area, cultural List of regions of California, region that generally comprises the southern portion of the U.S. state of California. Its densely populated coastal reg ...


References


External links

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