Cobb County is a
county
A county () is a geographic region of a country used for administrative or other purposesL. Brookes (ed.) '' Chambers Dictionary''. Edinburgh: Chambers Harrap Publishers Ltd, 2005. in some nations. The term is derived from the Old French denoti ...
in the
U.S. state
In the United States, a state is a constituent political entity, of which there are 50. Bound together in a political union, each state holds governmental jurisdiction over a separate and defined geographic territory where it shares its so ...
of
Georgia
Georgia most commonly refers to:
* Georgia (country), a country in the South Caucasus
* Georgia (U.S. state), a state in the southeastern United States
Georgia may also refer to:
People and fictional characters
* Georgia (name), a list of pe ...
, and is a core county of the
Atlanta metropolitan area
Metro Atlanta, designated by the United States Office of Management and Budget as the Atlanta–Sandy Springs–Roswell metropolitan statistical area, is the most populous metropolitan statistical area in the U.S. state of Georgia and the sixt ...
in the north-central portion of the state. As of the 2020 Census, the population was 766,149. It is the state's third most populous county, after
Fulton and
Gwinnett counties. Its
county seat
A county seat is an administrative center, seat of government, or capital city of a county or parish (administrative division), civil parish. The term is in use in five countries: Canada, China, Hungary, Romania, and the United States. An equiva ...
is
Marietta; its largest city is
Mableton.
Along with several adjoining counties, Cobb County was established on December 3, 1832, by the
Georgia General Assembly
The Georgia General Assembly is the state legislature of the U.S. state of Georgia. It is bicameral, consisting of the Senate and the House of Representatives.
Each of the General Assembly's 236 members serve two-year terms and are directl ...
from the large
Cherokee County territory—land northwest of the
Chattahoochee River
The Chattahoochee River () is a river in the Southeastern United States, Southeastern United States. It forms the southern half of the Alabama and Georgia (U.S. state), Georgia border, as well as a portion of the Florida and Georgia border. It ...
which the state acquired from the
Cherokee Nation
The Cherokee Nation ( or ) is the largest of three list of federally recognized tribes, federally recognized tribes of Cherokees in the United States. It includes people descended from members of the Cherokee Nation (1794–1907), Old Cheroke ...
and redistributed to
settler
A settler or a colonist is a person who establishes or joins a permanent presence that is separate to existing communities. The entity that a settler establishes is a Human settlement, settlement. A settler is called a pioneer if they are among ...
s via
lottery
A lottery (or lotto) is a form of gambling that involves the drawing of numbers at random for a prize. Some governments outlaw lotteries, while others endorse it to the extent of organizing a national or state lottery. It is common to find som ...
, following the passage of the federal
Indian Removal Act
The Indian Removal Act of 1830 was signed into law on May 28, 1830, by United States president Andrew Jackson. The law, as described by Congress, provided "for an exchange of lands with the Indians residing in any of the states or territories, ...
. The county was named for
Thomas Willis Cobb, a
U.S. representative and
senator
A senate is a deliberative assembly, often the upper house or Legislative chamber, chamber of a bicameral legislature. The name comes from the Ancient Rome, ancient Roman Senate (Latin: ''Senatus''), so-called as an assembly of the senior ...
from Georgia. It is believed that Marietta was named for his wife, Mary. Cobb County is included in the
Atlanta metropolitan area
Metro Atlanta, designated by the United States Office of Management and Budget as the Atlanta–Sandy Springs–Roswell metropolitan statistical area, is the most populous metropolitan statistical area in the U.S. state of Georgia and the sixt ...
and is situated immediately to the northwest of Atlanta's city limits. Its
Cumberland District, an
edge city
An edge city is a concentration of business, shopping, and entertainment outside a traditional downtown or central business district, in what had previously been a suburban, residential or rural area. The term was popularized by the 1991 boo ...
, has over of office space.
Major League Baseball
Major League Baseball (MLB) is a professional baseball league composed of 30 teams, divided equally between the National League (baseball), National League (NL) and the American League (AL), with 29 in the United States and 1 in Canada. MLB i ...
's
Atlanta Braves
The Atlanta Braves are an American professional baseball team based in the Atlanta metropolitan area. The Braves compete in Major League Baseball (MLB) as a member club of the National League (baseball), National League (NL) National League Eas ...
have played home games at
Truist Park in Cumberland since 2017.
In 2003, the U.S. Census Bureau ranked Cobb County as the most educated in the state of Georgia and 12th-most in the United States. It has ranked among the top 100 highest-income counties in the United States. In October 2017, Cobb was ranked as the "Least Obese County in Georgia." Cobb County is one of the fastest growing counties in Georgia according to the 2020 US Census.
History
Cobb County was one of nine Georgia counties carved out of the disputed territory of the Cherokee Nation in 1832. It was the 81st county in Georgia and named for Judge
Thomas Willis Cobb, who served as a U.S. Senator, state representative, and superior court judge. It is believed that the county seat of Marietta was named for Judge Cobb's wife, Mary. The state started acquiring
right-of-way for the
Western & Atlantic Railroad in 1836. A train began running between Marietta and
Marthasville (modern-day Atlanta) in 1845.

During 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 ...
, some
Confederate troops were trained at a camp in Big Shanty (now Kennesaw), where the
Andrews Raid occurred, starting the
Great Locomotive Chase
The Great Locomotive Chase (a portion of the Andrews' Raid or the Mitchel Raid) was a military raid that occurred April 12, 1862, in northern Georgia (U.S. state), Georgia during the American Civil War. Volunteers from the Union Army, led by civ ...
.
There were battles of
New Hope Church May 25, 1864,
Pickett's Mill May 27, and
Dallas
Dallas () is a city in the U.S. state of Texas and the most populous city in the Dallas–Fort Worth metroplex, the List of Texas metropolitan areas, most populous metropolitan area in Texas and the Metropolitan statistical area, fourth-most ...
May 28. These were followed by the prolonged series of battles through most of June 1864 until very early July: the
Battle of Marietta
A battle is an occurrence of combat in warfare between opposing military units of any number or size. A war usually consists of multiple battles. In general, a battle is a military engagement that is well defined in duration, area, and force ...
and the
Battle of Noonday Creek. The
Battle of Allatoona Pass on October 5, 1864, occurred as Sherman was starting his
march through Georgia. Union forces burnt most houses and confiscated or burnt crops. The
Battle of Kennesaw Mountain on June 27, 1864, was the site of the only major Confederate victory in General
William T. Sherman
William is a masculine given name of Germanic origin. It became popular in England after the Norman conquest in 1066,All Things William"Meaning & Origin of the Name"/ref> and remained so throughout the Middle Ages and into the modern era. It is ...
's invasion of Georgia. Despite the victory, Union forces outflanked the Confederates. In 1915,
Leo Frank, the Jewish supervisor of an Atlanta pencil factory who was convicted of murdering one of his workers, thirteen-year-old Mary Phagan, was kidnapped from his jail cell and brought to Frey's Gin, east of Marietta, where he was lynched.
Cotton farming in the area peaked from the 1890s through the 1920s. Low prices during the
Great Depression
The Great Depression was a severe global economic downturn from 1929 to 1939. The period was characterized by high rates of unemployment and poverty, drastic reductions in industrial production and international trade, and widespread bank and ...
resulted in the cessation of cotton farming throughout Cobb County. The price of cotton went from 16¢ per pound (35¢/kg) in 1920 to 9½¢ (21¢/kg) in 1930. This resulted in a cotton bust for the county, which had stopped growing the product but was milling it. This bust was followed by the
Great Depression
The Great Depression was a severe global economic downturn from 1929 to 1939. The period was characterized by high rates of unemployment and poverty, drastic reductions in industrial production and international trade, and widespread bank and ...
.
To help combat the bust, the state started work on a road in 1922 that would later become
U.S. 41, later replaced by
Cobb Parkway in the late 1940s and early 1950s.

In 1942, Bell Aircraft opened a Marietta plant to manufacture
B-29 bombers and
Marietta Army Airfield was founded. Both were closed after World War II but reopened during the
Korean War
The Korean War (25 June 1950 – 27 July 1953) was an armed conflict on the Korean Peninsula fought between North Korea (Democratic People's Republic of Korea; DPRK) and South Korea (Republic of Korea; ROK) and their allies. North Korea was s ...
when the Air Force acquired the airfield, renamed Dobbins AFB, and the plant by
Lockheed. During the Korean and
Vietnam War
The Vietnam War (1 November 1955 – 30 April 1975) was an armed conflict in Vietnam, Laos, and Cambodia fought between North Vietnam (Democratic Republic of Vietnam) and South Vietnam (Republic of Vietnam) and their allies. North Vietnam w ...
s, Lockheed Marietta was the leading manufacturer of military transport planes, including the
C-130 Hercules
The Lockheed C-130 Hercules is an American four-engine turboprop military transport aircraft designed and built by Lockheed Corporation, Lockheed (now Lockheed Martin). Capable of using unprepared runways for takeoffs and landings, the C-130 w ...
and the
C-5 Galaxy. "In Cobb County and other sprawling Cold War suburbs from
Orange County to
Norfolk
Norfolk ( ) is a Ceremonial counties of England, ceremonial county in England, located in East Anglia and officially part of the East of England region. It borders Lincolnshire and The Wash to the north-west, the North Sea to the north and eas ...
/
Hampton Roads
Hampton Roads is a body of water in the United States that serves as a wide channel for the James River, James, Nansemond River, Nansemond, and Elizabeth River (Virginia), Elizabeth rivers between Old Point Comfort and Sewell's Point near whe ...
, the direct link between federal defense spending and local economic prosperity structured a bipartisan political culture of hawkish conservatism and material self-interest on issues of national security."
When county
home rule
Home rule is the government of a colony, dependent country, or region by its own citizens. It is thus the power of a part (administrative division) of a state or an external dependent country to exercise such of the state's powers of governan ...
was enacted statewide by
amendment
An amendment is a formal or official change made to a law, contract, constitution, or other legal document. It is based on the verb to amend, which means to change for better. Amendments can add, remove, or update parts of these agreements. They ...
to the
Georgia state constitution in the early 1960s,
Ernest W. Barrett became the first chairman of the new
county commission. The county
courthouse
A courthouse or court house is a structure which houses judicial functions for a governmental entity such as a state, region, province, county, prefecture, regency, or similar governmental unit. A courthouse is home to one or more courtrooms, ...
, built in 1888, was demolished, spurring a law that now prevents counties from doing so without a
referendum
A referendum, plebiscite, or ballot measure is a Direct democracy, direct vote by the Constituency, electorate (rather than their Representative democracy, representatives) on a proposal, law, or political issue. A referendum may be either bin ...
. In the 1960s and 1970s, Cobb
transformed from rural to suburban, as integration spurred
white flight
The white flight, also known as white exodus, is the sudden or gradual large-scale migration of white people from areas becoming more racially or ethnoculturally diverse. Starting in the 1950s and 1960s, the terms became popular in the Racism ...
from the city of Atlanta, which by 1970 was majority-African-American. Real-estate booms drew rural white southerners and
Rust Belt
The Rust Belt, formerly the Steel Belt or Factory Belt, is an area of the United States that underwent substantial Deindustrialization, industrial decline in the late 20th century. The region is centered in the Great Lakes and Mid-Atlantic (Uni ...
transplants, both groups mostly first-generation
white-collar worker
A white-collar worker is a person who performs professional service, desk, managerial, or administrative work. White-collar work may be performed in an office or similar setting. White-collar workers include job paths related to government, co ...
s. Cobb County was the home of former segregationist and Georgia governor
Lester Maddox (1966–71). In 1975, Cobb voters elected
John Birch Society leader
Larry McDonald to Congress, running in opposition to
desegregation busing. A
conservative Democrat, McDonald called for investigations into alleged plots by the
Rockefellers and the
Soviet Union
The Union of Soviet Socialist Republics. (USSR), commonly known as the Soviet Union, was a List of former transcontinental countries#Since 1700, transcontinental country that spanned much of Eurasia from 1922 until Dissolution of the Soviet ...
to impose "socialist-one-world-government" and co-founded the
Western Goals Foundation. In 1983, McDonald died aboard
Korean Air Lines Flight 007
Korean Air Lines Flight 007 (KE007/KAL007)In aviation, two types of Airline codes, airline designators are used. The flight number KAL 007, with the ICAO code for Korean Air Lines, was used by air traffic control. In ticketing, however, IAT ...
, shot down by a Soviet fighter jet over restricted airspace. I-75 through the county is now named for him.

In 1990, Republican Congressmen
Newt Gingrich
Newton Leroy Gingrich (; né McPherson; born June 17, 1943) is an American politician and author who served as the List of speakers of the United States House of Representatives, 50th speaker of the United States House of Representatives from 1 ...
became Representative of a new district centered around Cobb County. In 1994, as Republicans took control of the U.S. House of Representatives for the first time in almost fifty years, Gingrich became
Speaker of the House, thrusting Cobb County into the national spotlight.
In 1993, county commissioners passed a resolution condemning homosexuality and cutting off funding for the arts after complaints about a community theater. After protests from gay rights organizations, organizers of the
1996 Summer Olympics
The 1996 Summer Olympics (officially the Games of the XXVI Olympiad, also known as Atlanta 1996 and commonly referred to as the Centennial Olympic Games) were an international multi-sport event held from July 19 to August 4, 1996, in Atlanta, ...
pulled events out of Cobb County, including the
Olympic Torch Relay. The county's inns were nevertheless filled at 100% of capacity for two months during the event.
In the 1990s and 2000s, Cobb's demographics changed. As Atlanta's
gentrification
Gentrification is the process whereby the character of a neighborhood changes through the influx of more Wealth, affluent residents (the "gentry") and investment. There is no agreed-upon definition of gentrification. In public discourse, it has ...
reversed decades of white flight, middle-class African-Americans and Russian, Bosnian, Chinese, Indian, Brazilian, Mexican, and Central American immigrants moved to older suburbs in south and southwest Cobb. In 2010, African-American Democrat
David Scott
David Randolph Scott (born June 6, 1932) is an American retired test pilot and NASA astronaut who was the List of Apollo astronauts#People who have walked on the Moon, seventh person to walk on the Moon. Selected as part of the NASA Astronaut ...
was elected to
Georgia's 13th congressional district, which included many of those suburbs. Cobb became the first Georgia county to participate in the
Immigration and Nationality Act Section 287(g) enabling local law officers to enforce immigration law.
Geography

According to the
U.S. Census Bureau, the county has a total area of , of which is land and (1.4%) is water.
The county is located in the upper
Piedmont
Piedmont ( ; ; ) is one of the 20 regions of Italy, located in the northwest Italy, Northwest of the country. It borders the Liguria region to the south, the Lombardy and Emilia-Romagna regions to the east, and the Aosta Valley region to the ...
region of the state, with a few mountains located within the county, considered to be part of the southernmost extensions of the
Appalachian Mountains
The Appalachian Mountains, often called the Appalachians, are a mountain range in eastern to northeastern North America. The term "Appalachian" refers to several different regions associated with the mountain range, and its surrounding terrain ...
.
The county is divided between two major
basins
Basin may refer to:
Geography and geology
* Depression (geology)
** Back-arc basin, a submarine feature associated with island arcs and subduction zones
** Debris basin, designed to prevent damage from debris flow
** Drainage basin (hydrology), ...
. Most
runoff flows into the Middle
Chattahoochee-
Lake Harding and Upper
Chattahoochee River
The Chattahoochee River () is a river in the Southeastern United States, Southeastern United States. It forms the southern half of the Alabama and Georgia (U.S. state), Georgia border, as well as a portion of the Florida and Georgia border. It ...
sub-basins of the
ACF River Basin (Apalachicola-Chattahoochee-Flint River Basin) along the southeastern border, directly via
Willeo Creek,
Sope Creek (Sewell Creek),
Rottenwood Creek (Powers Creek, Poorhouse Creek, Poplar Creek),
Nickajack Creek and others. The large
Sweetwater Creek is the other major stream, carrying the waters of
Noses Creek (Ward Creek, Olley Creek, Mud Creek),
Powder Springs Creek (Rakestraw Creek, Mill Creek) and others into the Chattahoochee. A
ridge
A ridge is a long, narrow, elevated geomorphologic landform, structural feature, or a combination of both separated from the surrounding terrain by steep sides. The sides of a ridge slope away from a narrow top, the crest or ridgecrest, wi ...
from
Lost Mountain in the west, to
Kennesaw Mountain in the north-central, to
Sweat Mountain in the extreme northeast, divides the far north-northwest of the county into the
Etowah River
The Etowah River is a U.S. Geological Survey. National Hydrography Dataset high-resolution flowline dataThe National Map, accessed April 27, 2011 waterway that rises northwest of Dahlonega, Georgia, Dahlonega, Georgia (U.S. state), Georgia, ...
sub-basin of the
ACT River Basin (Coosa-Tallapoosa River Basin), which includes
Lake Allatoona.
Noonday Creek (Little Noonday Creek) flows northward into the lake, as does
Allatoona Creek, which forms a major arm of the lake. Proctor Creek forms the much older
Lake Acworth, which in turn empties directly into Lake Allatoona under the Lake Acworth Drive (
Georgia 92
State Route 92 (SR 92) is a state highway in the U.S. state of Georgia. Its southern terminus is an intersection with US 19 Bus./ US 41 Bus./ SR 16 in Griffin. Its northern terminus is an intersection with SR 9 ...
) bridge. North Cobb is in the
Coosa River
The Coosa River is a tributary of the Alabama River in the U.S. states of Alabama and Georgia (U.S. state), Georgia. The river is about long.U.S. Geological Survey. National Hydrography Dataset high-resolution flowline dataThe National Map, ac ...
basin.
There are several high points in Cobb County.
*
Sweat Mountain: in the extreme northeast portion, runs along the border with
Cherokee County, and is the metro area's major
antenna farm
An antenna farm, satellite dish farm or dish farm is an area dedicated to television or radio telecommunications transmitting or receiving antenna equipment, such as C band (IEEE), C, Ku band, Ku or Ka band, Ka Band (radio), band satellite dish ...
*
Blackjack Mountain: a low ridge between central and
east Cobb
*
Kennesaw Mountain: the highest point in the county and the entire suburban area of metro Atlanta, located in the north-northwest between Kennesaw and Marietta
*
Little Kennesaw Mountain: an offshoot of Kennesaw
*
Lost Mountain: in western Cobb
*
Pine Mountain: west-northwest of Kennesaw Mountain, between Kennesaw and
Due West
*
Brushy Mountain: near Kennesaw Mountain, just southeast of
Barrett Parkway at
Cobb Parkway
*
Vinings Mountain
Mount Wilkinson is a low mountain immediately north-northwest of and directly overlooking downtown Vinings, Georgia, Vinings, in southeast Cobb County, Georgia, Cobb County, Georgia (U.S. state), Georgia, United States, USA. Although it rises s ...
or
Mount Wilkinson: overlooks the town of Vinings
Adjacent counties

*
Cherokee County – north
*
Fulton County – east
*
Douglas County – southwest
*
Paulding County – west
*
Bartow County – northwest
Addressing
Despite the lack of a grid system of
city block
A city block, residential block, urban block, or simply block is a central element of urban planning and urban design.
In a city with a grid system, the block is the smallest group of buildings that is surrounded by streets. City blocks are th ...
s though the county, all
street address
An address is a collection of information, presented in a mostly fixed format, used to give the location of a building, apartment, or other structure or a plot of land, generally using political boundaries and street names as references, along ...
es have their numeric
origin at the southwest corner of the
town square
A town square (or public square, urban square, city square or simply square), also called a plaza or piazza, is an open public space commonly found in the heart of a traditional town or city, and which is used for community gatherings. Relat ...
in Marietta.
Geocodes and the world's largest toll-free calling area

Originally in
area code 404, the county was moved into
area code 770
Area code 770 is a telephone area code in the North American Numbering Plan (NANP) serving all or part of 29 counties in North Georgia (U. S. state), Georgia, including most of Atlanta's suburbs. It was created in 1995 in a split of numbering pla ...
in 1995, and overlaid by
area code 678 in 1998. Before 1995, those with phones tied to the Woodstock
telephone exchange
A telephone exchange, telephone switch, or central office is a central component of a telecommunications system in the public switched telephone network (PSTN) or in large enterprises. It facilitates the establishment of communication circuits ...
(prefixes 924, 926, 928, later 516 and 591) could also call the
Canton exchange (479, later 445, then 704) as a local call. This became moot, along with other dual-zone exchanges in metro Atlanta, when the
exurb
An exurb (or alternately: exurban area) is an area outside the typically denser inner suburbs, suburban area, at the edge of a metropolitan area, which has some economic and commuting connection to the metro area, low housing-density,
and rela ...
an exchanges (including Canton) were fully made a part of what was already the world's largest toll-free calling zone. It is a zone spanning , with four active telephone
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 ...
, and local calling extending into portions of two others.
Cobb's
FIPS county code is 13067. Because the
National Weather Service
The National Weather Service (NWS) is an Government agency, agency of the Federal government of the United States, United States federal government that is tasked with providing weather forecasts, warnings of hazardous weather, and other weathe ...
has not subdivided the county, its
WRSAME code is 013067, for receiving targeted
weather warnings from
NOAA Weather Radio
NOAA Weather Radio (NWR), also known as NOAA Weather Radio All Hazards, is an automated 24-hour network of Very high frequency, VHF Frequency modulation, FM weather radio stations in the United States which broadcast weather information direct ...
. The county is primarily within the
broadcast range
A broadcast range (also listening range or listening area for radio, or viewing range or viewing area for television) is the service area that a broadcast station or other transmission covers via radio waves (or possibly infrared light, which i ...
of one weather radio station: KEC80, on 162.550 MHz, transmitted to all of metro Atlanta and broadcast from
NWSFO Peachtree City. The secondary station is the much newer WWH23 on 162.425 from
Buchanan, which also transmits warnings for Cobb but has reception mainly in the western part of the county.
Demographics
2020 census
As of the
2020 United States census, there were 766,149 people, 286,952 households, and 191,533 families residing in the county.
2010 Census
As of the
2010 United States census, there were 688,078 people, 260,056 households, and 175,357 families residing in the county.
The population density was . There were 286,490 housing units at an average density of .
The racial makeup of the county was 62.21% white, 24.96% black or African American, 4.46% Asian, 0.34% American Indian, 0.1% Pacific Islander, 5.28% from other races, and 2.71% from two or more races. Those of Hispanic or Latino origin made up 12.26% of the population.
Regarding specific ethnic origins, 10.4% cited German, 10.0% English, 9.3% Irish, and 8.6% American ancestry.
Of the 260,056 households, 36.7% had children under the age of 18 living with them, 50.2% were married couples living together, 13.0% had a female householder with no husband present, 32.6% were non-families, and 25.6% of all households were made up of individuals. The average household size was 2.61 and the average family size was 3.17. The median age was 35.4 years.
The median income for a household in the county was $65,522 and the median income for a family was $78,920. Males had a median income of $55,200 versus $43,367 for females. The per capita income for the county was $33,110. About 7.6% of families and 10.6% of the population were below the poverty line, including 14.5% of those under age 18 and 7.2% of those age 65 or over.
2000 Census
As of 2000, there were 697,553 people, 248,303 households, and 169,178 families residing in the county. The population density was . There were 261,659 housing units at an average density of . The racial makeup of the county in 2000 was 72.4%
White
White is the lightest color and is achromatic (having no chroma). It is the color of objects such as snow, chalk, and milk, and is the opposite of black. White objects fully (or almost fully) reflect and scatter all the visible wa ...
, 18.8%
Black
Black is a color that results from the absence or complete absorption of visible light. It is an achromatic color, without chroma, like white and grey. It is often used symbolically or figuratively to represent darkness.Eva Heller, ''P ...
, 0.3%
Native American, 3.06%
Asian, 0.0%
Pacific Islander
Pacific Islanders, Pasifika, Pasefika, Pacificans, or rarely Pacificers are the peoples of the list of islands in the Pacific Ocean, Pacific Islands. As an ethnic group, ethnic/race (human categorization), racial term, it is used to describe th ...
, 5.3% from
other races, and 1.87% from two or more races. 7.73% of the population was
Hispanic
The term Hispanic () are people, Spanish culture, cultures, or countries related to Spain, the Spanish language, or broadly. In some contexts, Hispanic and Latino Americans, especially within the United States, "Hispanic" is used as an Ethnici ...
or
Latino of any race.
There were 248,303 households, out of which 35.80% had children under the age of 18 living with them, 54.30% were married couples living together, 10.70% had a female householder with no husband present, and 31.20% were non-families. 23.20% of all households were made up of individuals, and 4.10% had someone living alone who was 65 years of age or older. The average household size was 2.71 and the average family size was 3.25.
In the county, 26.10% of the population was under the age of 18, 9.00% from 18 to 24, 36.50% from 25 to 44, 21.50% from 45 to 64, and 6.90% was 65 years of age or older. The median age was 33 years. For every 100 females, there were 98.50 males. For every 100 females age 18 and over, there were 95.90 males.
As of 2007, the median income was $70,472. The per capita income for the county was $32,740. About 6.0% of families and 9.4% of the population were below the poverty line, including 9.1% of those under age 18 and 7.8% of those age 65 or over.
Education
Public schools
School districts include:
*
Cobb County School District (serves all county locations except the city of Marietta)
*
Marietta City Schools (serves the city of Marietta locations)
Private schools
*
Cumberland Christian Academy, Austell (K–12)
* Dominion Christian School, Marietta (middle school–12)
*
Midway Covenant Christian School, Powder Springs (preK–12)
*
Mount Paran Christian School, Kennesaw (preK–12)
*
North Cobb Christian School, Kennesaw (K–12)
*
The Walker School
The Walker School, formerly known as the Joseph T. Walker School, is a private school in Marietta, Georgia, United States, on Cobb Parkway ( U.S. 41) in what was originally Sprayberry High School. It was founded in 1957 as the St. James Day ...
, Marietta (preK–12)
*
Whitefield Academy, Mableton (preK–12)
* East Cobb Christian School, Marietta (K–8)
Colleges and universities
*
Chattahoochee Technical College
*
Kennesaw State University
*
Life University
Libraries
Cobb County maintains the
Cobb County Public Library System. The libraries provide resources such as books, videos, internet access, printing, and computer classes. The libraries in the CCPLS are:
* East Cobb Library
* Gritters Library
* Kemp Memorial Library
* Lewis A. Ray Library
* Mountain View Regional Library
* North Cobb Regional Library
* Powder Springs Library
* Sewell Mill Library & Cultural Center
* Sibley Library
* South Cobb Regional Library
* Joanne P. Stratton Library
* Sweetwater Valley Library
* Charles D. Switzer Library
* Vinings Library
* West Cobb Regional Library
* Bookmobile
The
Smyrna Public Library is a city-owned library in Smyrna and is not part of the county system.
Government and elections
Under Georgia's
home rule
Home rule is the government of a colony, dependent country, or region by its own citizens. It is thus the power of a part (administrative division) of a state or an external dependent country to exercise such of the state's powers of governan ...
provision, county governments have free rein to legislate on all matters within the county, provided that such legislation does not conflict with state or federal laws or constitutions.
Cobb County is governed by a five-member
board of commissioners, which has both
legislative
A legislature (, ) is a deliberative assembly with the legal authority to make laws for a political entity such as a country, nation or city on behalf of the people therein. They are often contrasted with the executive and judicial powers ...
and
executive
Executive ( exe., exec., execu.) may refer to:
Role or title
* Executive, a senior management role in an organization
** Chief executive officer (CEO), one of the highest-ranking corporate officers (executives) or administrators
** Executive dir ...
authority
Authority is commonly understood as the legitimate power of a person or group of other people.
In a civil state, ''authority'' may be practiced by legislative, executive, and judicial branches of government,''The New Fontana Dictionary of M ...
within the county. The chairman of the board is elected county-wide. The other four commissioners are elected from single-member districts. The board hires a county
manager
Management (or managing) is the administration of organizations, whether businesses, nonprofit organizations, or a government bodies through business administration, nonprofit management, or the political science sub-field of public administra ...
who oversees the day-to-day operations of the county's
executive department
The executive branch is the part of government which executes or enforces the law.
Function
The scope of executive power varies greatly depending on the political context in which it emerges, and it can change over time in a given country. In ...
s.
Cobb County Board of Commissioners
County residents also elect a sheriff, district attorney, probate court judge, clerk of the superior court, clerk of the state court, state court solicitor, chief magistrate judge (who then appoints other magistrate court judges), superior court judges, state court judges, tax commissioner, surveyor, and a seven-member board of education. Democrats hold every partisan office elected countywide as well as a (3-2) voting majority on the county commission. In addition to the county sheriff, the constitutional chief
law enforcement
Law enforcement is the activity of some members of the government or other social institutions who act in an organized manner to enforce the law by investigating, deterring, rehabilitating, or punishing people who violate the rules and norms gove ...
officer of the county, Cobb County has a separate police department under the authority of the Board of Commissioners. The sheriff oversees the
jail
A prison, also known as a jail, gaol, penitentiary, detention center, correction center, correctional facility, or remand center, is a facility where people are imprisoned under the authority of the state, usually as punishment for various cr ...
, to which everyone arrested under state law is taken, regardless of the city or other area of the county where it happens, or which police department makes the arrest.
With the exception of
Mableton, each city has a separate police department, answerable to its governing council. Marietta, Smyrna, and Austell have separate
fire department
A fire department (North American English) or fire brigade (English in the Commonwealth of Nations, Commonwealth English), also known as a fire company, fire authority, fire district, fire and rescue, or fire service in some areas, is an organi ...
s, with the Cobb County Fire Department being the authority having jurisdiction over Kennesaw, Acworth, Powder Springs,
Mableton and unincorporated areas. Cobb
911 covers unincorporated areas and the city of Marietta. Kennesaw and Acworth jointly operate a small 911
call center
A call centre (English in the Commonwealth of Nations, Commonwealth spelling) or call center (American English, American spelling; American and British English spelling differences#-re, -er, see spelling differences) is a managed capability th ...
(
PSAP) upstairs in Kennesaw
city hall
In local government, a city hall, town hall, civic centre (in the UK or Australia), guildhall, or municipal hall (in the Philippines) is the chief administrative building of a city, town, or other municipality. It usually houses the city o ...
,
dispatching the police departments in both cities, and
forwarding fire calls to Cobb. Smyrna operates a separate PSAP while offering dispatch services to the city of Powder Springs. Austell operates its own separate 911 system.
The county retails potable water to much of the county and wholesales it to various cities.
The current County Manager is Jackie R. McMorris.
Politics
From
1964
Events January
* January 1 – The Federation of Rhodesia and Nyasaland is dissolved.
* January 5 – In the first meeting between leaders of the Roman Catholic and Orthodox churches since the fifteenth century, Pope Paul VI and Patria ...
until
2012
2012 was designated as:
*International Year of Cooperatives
*International Year of Sustainable Energy for All
Events January
*January 4 – The Cicada 3301 internet hunt begins.
* January 12 – Peaceful protests begin in the R ...
, the county was a Republican stronghold in presidential elections. The only time during this period that the county supported a Democrat was in
1976
Events January
* January 2 – The International Covenant on Economic, Social and Cultural Rights enters into force.
* January 5 – The Pol Pot regime proclaims a new constitution for Democratic Kampuchea.
* January 18 – Full diplomatic ...
when native son
Jimmy Carter
James Earl Carter Jr. (October 1, 1924December 29, 2024) was an American politician and humanitarian who served as the 39th president of the United States from 1977 to 1981. A member of the Democratic Party (United States), Democratic Party ...
swept every county in the state. Before
1960, it was a "
Solid South
The Solid South was the electoral voting bloc for the Democratic Party (United States), Democratic Party in the Southern United States between the end of the Reconstruction era in 1877 and the Civil Rights Act of 1964. In the aftermath of the Co ...
" Democratic county, except when
Warren G. Harding
Warren Gamaliel Harding (November 2, 1865 – August 2, 1923) was the 29th president of the United States, serving from 1921 until his death in 1923. A member of the Republican Party (United States), Republican Party, he was one of the most ...
came close to carrying it in
1920
Events January
* January 1
** Polish–Soviet War: The Russian Red Army increases its troops along the Polish border from 4 divisions to 20.
** Kauniainen in Finland, completely surrounded by the city of Espoo, secedes from Espoo as its ow ...
, and when
Herbert Hoover
Herbert Clark Hoover (August 10, 1874 – October 20, 1964) was the 31st president of the United States, serving from 1929 to 1933. A wealthy mining engineer before his presidency, Hoover led the wartime Commission for Relief in Belgium and ...
won it by nine points due to anti-Catholic voting against
Al Smith
Alfred Emanuel Smith (December 30, 1873 – October 4, 1944) was the 42nd governor of New York, serving from 1919 to 1920 and again from 1923 to 1928. He was the Democratic Party (United States), Democratic Party's presidential nominee in the 1 ...
in
1928
Events January
* January – British bacteriologist Frederick Griffith reports the results of Griffith's experiment, indirectly demonstrating that DNA is the genetic material.
* January 1 – Eastern Bloc emigration and defection: Boris B ...
.
In the late 20th century, the county developed a reputation as a
conservative
Conservatism is a cultural, social, and political philosophy and ideology that seeks to promote and preserve traditional institutions, customs, and values. The central tenets of conservatism may vary in relation to the culture and civiliza ...
stronghold. However, due to rapid racial and ethnic demographic changes since the 1990s, along with population growth coming from blue northern states, the county has increasingly supported the Democratic Party. In
2016
2016 was designated as:
* International Year of Pulses by the sixty-eighth session of the United Nations General Assembly.
* International Year of Global Understanding (IYGU) by the International Council for Science (ICSU), the Internationa ...
, when
Hillary Clinton
Hillary Diane Rodham Clinton ( Rodham; born October 26, 1947) is an American politician, lawyer and diplomat. She was the 67th United States secretary of state in the administration of Barack Obama from 2009 to 2013, a U.S. senator represent ...
became the first Democrat to win Cobb County since
Jimmy Carter
James Earl Carter Jr. (October 1, 1924December 29, 2024) was an American politician and humanitarian who served as the 39th president of the United States from 1977 to 1981. A member of the Democratic Party (United States), Democratic Party ...
in
1976
Events January
* January 2 – The International Covenant on Economic, Social and Cultural Rights enters into force.
* January 5 – The Pol Pot regime proclaims a new constitution for Democratic Kampuchea.
* January 18 – Full diplomatic ...
, and the first non-Georgian Democrat since
John F. Kennedy in 1960. The county then supported
Joe Biden
Joseph Robinette Biden Jr. (born November 20, 1942) is an American politician who was the 46th president of the United States from 2021 to 2025. A member of the Democratic Party (United States), Democratic Party, he served as the 47th vice p ...
in
2020
The year 2020 was heavily defined by the COVID-19 pandemic, which led to global Social impact of the COVID-19 pandemic, social and Economic impact of the COVID-19 pandemic, economic disruption, mass cancellations and postponements of even ...
by 14 points–the best showing for a Democrat since Kennedy in 1960. This was crucial to Biden winning the state for the Democrats for the first time since
1992
1992 was designated as International Space Year by the United Nations.
Events January
* January 1 – Boutros Boutros-Ghali of Egypt replaces Javier Pérez de Cuéllar of Peru as United Nations Secretary-General.
* January 6
** The Republ ...
.
In
2018
Events January
* January 1 – Bulgaria takes over the Presidency of the Council of the European Union, after the Estonian presidency.
* January 4 – SPLM-IO rebels loyal to Chan Garang Lual start a raid against Juba, capital of ...
,
Stacey Abrams became the first Democrat to win Cobb County in a gubernatorial election since
1986, when
Joe Frank Harris swept every county statewide.
Cobb County is one of six "reverse pivot counties", counties that voted Republican in 2008 and 2012 before voting Democratic in 2016 onward. It is also one of nine counties that shifted more than 25 percentage points to the left from
2012
2012 was designated as:
*International Year of Cooperatives
*International Year of Sustainable Energy for All
Events January
*January 4 – The Cicada 3301 internet hunt begins.
* January 12 – Peaceful protests begin in the R ...
to 2024.
Georgia General Assembly
Georgia State Senate
Georgia House of Representatives
2020 voter suppression controversy
In 2020, in the turmoil surrounding the election defeat of
Donald Trump
Donald John Trump (born June 14, 1946) is an American politician, media personality, and businessman who is the 47th president of the United States. A member of the Republican Party (United States), Republican Party, he served as the 45 ...
, the chairman of the Cobb County Republicans and another person challenged the election results in an attempt to remove 16,024 Cobb County voters from eligibility to vote in the runoff election for both Georgia senators, scheduled for January 5, 2021. The county Board of Elections held a hearing to decide whether there was probable cause to move forward with hearings for each name on the list. The Board's attorney stated there was no probable cause and gave reasons. After a brief discussion, the board voted unanimously to deny the challenge.
Taxes
In addition to the 4% statewide
sales tax
A sales tax is a tax paid to a governing body for the sales of certain goods and services. Usually laws allow the seller to collect funds for the tax from the consumer at the point of purchase. When a tax on goods or services is paid to a govern ...
, Cobb County levies an additional 2% for special projects, each 1% subject to separate renewal every few years by countywide
referendum
A referendum, plebiscite, or ballot measure is a Direct democracy, direct vote by the Constituency, electorate (rather than their Representative democracy, representatives) on a proposal, law, or political issue. A referendum may be either bin ...
(including within its cities). This funds mainly transportation and parks. Cobb levies a 1% tax to lower
property tax
A property tax (whose rate is expressed as a percentage or per mille, also called ''millage'') is an ad valorem tax on the value of a property.In the OECD classification scheme, tax on property includes "taxes on immovable property or Wealth t ...
es, but only for the public school budget, and not the additional 1% HOST
homestead exemption
The homestead exemption is a legal regime to protect the value of the homes of residents from property taxes, creditors, and circumstances that arise from the death of the homeowner's spouse, disability, or other situations.
Such laws are found ...
for general funds. The county has also voted not to pay the extra 1% to join
MARTA.
At the beginning of 2006, Cobb became the last county in the state to raise the tax to 6%, which also doubled the tax on food to 2%. The
SPLOST barely passed by a 114
vote
Voting is the process of choosing officials or policies by casting a ballot, a document used by people to formally express their preferences. Republics and representative democracies are governments where the population chooses representative ...
margin, or less than one-quarter of a percent, in a September 2005
referendum
A referendum, plebiscite, or ballot measure is a Direct democracy, direct vote by the Constituency, electorate (rather than their Representative democracy, representatives) on a proposal, law, or political issue. A referendum may be either bin ...
. The
revenue
In accounting, revenue is the total amount of income generated by the sale of product (business), goods and services related to the primary operations of a business.
Commercial revenue may also be referred to as sales or as turnover. Some compan ...
was to go to a new county
courthouse
A courthouse or court house is a structure which houses judicial functions for a governmental entity such as a state, region, province, county, prefecture, regency, or similar governmental unit. A courthouse is home to one or more courtrooms, ...
, expanded jail, various transportation projects, and the purchasing of property for parks and green space. In 2008, the school tax was renewed for a third term, funding the Marietta and Cobb
school systems.
Economy
The
Cobb County School District is Cobb County's largest employer, employing over 15,000 people.
Private corporations include:
*
The Home Depot
The Home Depot, Inc., often referred to as Home Depot, is an American multinational corporation, multinational home improvement retail corporation that sells tools, construction products, appliances, and services, including fuel and transportat ...
Atlanta Store Support Center, world headquarters
*
The Weather Channel
The Weather Channel (TWC) is an American pay television television channel, channel owned by Weather Group, LLC, a subsidiary of Allen Media Group. The channel's headquarters are located in Atlanta, Georgia. Launched on May 2, 1982, the channel ...
headquarters
*
InTown Suites headquarters
*
Lockheed Martin
The Lockheed Martin Corporation is an American Arms industry, defense and aerospace manufacturer with worldwide interests. It was formed by the merger of Lockheed Corporation with Martin Marietta on March 15, 1995. It is headquartered in North ...
Aeronautical Plant, located next to
Dobbins Air Reserve Base in unincorporated Cobb
*
Kool Smiles (
Marietta)
*
GE Power
GE Power (formerly known as GE Energy) was an American energy technology company owned by General Electric (GE). In April 2024, GE completed the spin-off of GE Power into a separate company, GE Vernova. Following this, General Electric ceased t ...
headquarters
*
Papa Johns "additional" headquarters
Retail
Shopping centers in the county include:
*
Cobb Center
* Cobb Place - 335,000 sq. ft., originally opened 1987
*
Cumberland Mall
*
Town Center at Cobb
Diplomatic missions
The
Consulate-General of Costa Rica in Atlanta is located in Suite 100 at 1870 The Exchange in an
unincorporated section of Cobb County.
Transportation
Major highways
* (Interstate 20)
* (Interstate 520)
* (Interstate 285)
* (Interstate 575)
*
*
*
*
*
* (
Kennesaw)
*
* (
Powder Springs)
* (
Austell)
*
*
*
* (
Marietta)
*
*
*
* (unsigned designation for I-75)
* (unsigned designation for I-20)
* (unsigned designation for I-285)
* (unsigned designation for I-575)
Airports
*
Cobb County International Airport at
McCollum Field
*
Dobbins Air Reserve Base (where the U.S. president usually arrives when visiting Atlanta)
Rail
*
Norfolk Southern
The Norfolk Southern Railway is a Class I freight railroad operating in the Eastern United States. Headquartered in Atlanta, the company was formed in 1982 with the merger of the Norfolk and Western Railway and Southern Railway. The comp ...
through Mableton, Austell, Powder Springs
*
CSX Transportation
CSX Transportation , known colloquially as simply CSX, is a Class I freight railroad company operating in the Eastern United States and the Canadian provinces of Ontario and Quebec. Operating about 21,000 route miles () of track, it is the lead ...
through Acworth, Kennesaw, Marietta, Smyrna, and Vinings
*
Georgia Northeastern Railroad A Short Line north from Marietta
Until 1971, the
Louisville & Nashville Railroad, running on tracks now owned by CSX, operated passenger trains through
Marietta depot.
Cobb County is not part of the
MARTA Rail network, because its voters rejected MARTA development in a 1965 referendum which led to its creation.
Mass transit
*
Xpress GA/RTA commuter buses and
CobbLinc Marietta/Cobb Counties Transit System serve the county.
MARTA also has a connecting bus service to the
Cumberland, Georgia
Cumberland is an edge city in Cobb County located in an unincorporated area of the northwest Atlanta metropolitan area, Georgia, United States. It is situated northwest of downtown Atlanta. With approximately 122,000 workers and 103,000 reside ...
business district in the southeastern part of the county.
Recreation

*
American Adventures (Marietta)
*
Chattahoochee River National Recreation Area
*
Kennesaw Mountain National Battlefield Park (Kennesaw to Marietta)
*
Lake Acworth/
Acworth Beach (Acworth)
*
Lake Allatoona (near Acworth)
*
Mable House (Mableton)
*
Marietta Confederate Cemetery (Marietta)
*
Marietta Museum of History (Marietta)
*
Marietta/Cobb Museum of Art (Marietta)
*
Marietta National Cemetery (Marietta)
*
Silver Comet Trail (Smyrna, Mableton, Powder Springs)
*
Six Flags Over Georgia (Austell)
*
Six Flags White Water (Marietta)
*
Southern Museum of Civil War and Locomotive History (Kennesaw)
Venues
*
Cobb County Civic Center
*
Cobb Energy Performing Arts Center
*
Coca-Cola Roxy
*
Mable House Amphitheater
*
Truist Park
Communities
Cities
*
Acworth
*
Austell
*
Kennesaw
*
Mableton
*
Marietta
*
Powder Springs
*
Smyrna
Smyrna ( ; , or ) was an Ancient Greece, Ancient Greek city located at a strategic point on the Aegean Sea, Aegean coast of Anatolia, Turkey. Due to its advantageous port conditions, its ease of defence, and its good inland connections, Smyrna ...
Census-designated places
*
Fair Oaks
*
Kennesaw State University
*
Vinings
Unincorporated communities
*
Chattahoochee Plantation
*
Clarkdale
*
Cumberland
Cumberland ( ) is an area of North West England which was historically a county. The county was bordered by Northumberland to the north-east, County Durham to the east, Westmorland to the south-east, Lancashire to the south, and the Scottish ...
*
East Cobb
*
Lost Mountain
*
Mars Hill
*
Mountain Ridge
*
Noonday
*
Powers Park
*
Sandy Plains
*
Spring Hill
*
Town Center
Notable people
*
Roy Barnes
Roy Eugene Barnes (born March 11, 1948)Cook, James F. (2005). ''The Governors of Georgia, 1754-2004, 3rd Edition, Revised and Expanded.'' Macon, GA: Mercer University Press. is an American attorney and politician who served as the 80th governo ...
– Governor of Georgia, 1999–2003; born in Cobb County and worked there as a prosecutor
[Cook, James F. (2005). ''The Governors of Georgia, 1754–2004, 3rd Edition, Revised and Expanded.'' Macon, GA: Mercer University Press.]
*
Bob Barr – politician; United States Representative,
Republican Party;
Libertarian Party candidate for President of the United States
*
Big Boss Man
Ray Washington Traylor Jr. (May 2, 1963 – September 22, 2004) was an American Professional wrestling, professional wrestler best known for his appearances with the WWE, World Wrestling Federation (WWF) under the ring name (The) Big Boss Man, a ...
(Ray Traylor) – professional wrestler; corrections officer
*
James V. Carmichael – member of the
Georgia General Assembly
The Georgia General Assembly is the state legislature of the U.S. state of Georgia. It is bicameral, consisting of the Senate and the House of Representatives.
Each of the General Assembly's 236 members serve two-year terms and are directl ...
, 1935–1940; candidate for governor of Georgia, 1946
*
Louie Giglio – pastor, author, founder of the
Passion Conferences, pastor of Passion City Church in Atlanta, head of
sixstepsrecords
*
Carter Kieboom - professional baseball player for the
Washington Nationals
The Washington Nationals are an American professional baseball team based in Washington, D.C. The Nationals compete in Major League Baseball (MLB) as a member club of the National League (NL) East Division. They play their home games at Na ...
*
Lil Yachty – rapper
*
Dansby Swanson - professional baseball player for the
Chicago Cubs
The Chicago Cubs are an American professional baseball team based in Chicago. The Cubs compete in Major League Baseball (MLB) as a member club of the National League (baseball), National League (NL) National League Central, Central Division. Th ...
Sister county
*
Seongdong-gu,
Seoul, South Korea
Seoul, officially Seoul Special Metropolitan City, is the capital city, capital and largest city of South Korea. The broader Seoul Metropolitan Area, encompassing Seoul, Gyeonggi Province and Incheon, emerged as the world's List of cities b ...
See also
*
National Register of Historic Places listings in Cobb County, Georgia
*
List of counties in Georgia
The U.S. state of Georgia is divided into 159 counties, the second-highest number after Texas, which has 254 counties. Under the Georgia State Constitution, all of its counties are granted home rule to deal with problems that are purely loca ...
References
External links
Cobb County governmentCobb Countyhistorical marker
{{Coord, 33.94, -84.58, display=title, type:adm2nd_region:US-GA_source:UScensus1990
Cobb
1832 establishments in Georgia (U.S. state)
Populated places established in 1832
Majority-minority counties in Georgia