• county
  • FIPS 13067
  • Largest town: Mableton

Cobb County, Georgia

Cobb County had 787,538 residents in the Census Vintage 2024 estimate, on 339.7 square miles of land. It ranks 3rd of 159 in Georgia by population and 84th by land area.

Population
787,538
#3 of 159 in Georgia · #85 in US
Area
339.7 sq mi
#84 of 159 in Georgia · #2,713 in US
Density
2,318 / sq mi
#3 of 159 in Georgia · #59 in US
Median household income
$99,134
#5 of 159 in Georgia · #146 in US

Census Vintage 2024 estimates · SAIPE 2023 income · 2024 Gazetteer land area

Cobb County within Georgia. Pin: Atlanta.

Measure from here

Tools and pages that start from Cobb County

Cobb County population, land area and income

Cobb County had 787,538 residents in the Census Vintage 2024 estimate, on 339.7 square miles of land. It ranks 3rd of 159 in Georgia by population and 84th by land area. That works out to 2,318.4 people per square mile, 24.1 times the US average of 96.3, and in the top tenth nationally.

The median county-equivalent in Georgia has 24,275 residents, so Cobb County is 32.4 times that size.

Its SAIPE 2023 median household income of $99,134 is in the top tenth among 3,143 counties with an estimate.

National rank among 3,144

Population

787,538

3144th1st

85th of 3,144 (US)

Land area

340 sq mi

3144th1st

2713th of 3,144 (US)

Density

2,318.4 / sq mi

3144th1st

59th of 3,144 (US)

Median household income

$99,134

3143rd1st

146th of 3,143 (US)

Rank within Georgia (159)

Population

787,538

159th1st

3rd of 159 (GA)

Land area

340 sq mi

159th1st

84th of 159 (GA)

Density

2,318.4 / sq mi

159th1st

3rd of 159 (GA)

Median household income

$99,134

159th1st

5th of 159 (GA)

How Cobb County's population changed since 2020

Cobb County gained 21,155 residents between the July 2020 and July 2024 estimates, a rise of 2.8%. That ranks 74th of 159 in Georgia for growth. The median Georgia county changed by +2.3%, and the state as a whole by +4.2%.

Since the April 2020 estimates base, Cobb County recorded 37,060 births and 22,270 deaths, a natural change of +14,790. Net international migration added +21,215 and net domestic migration, people moving to or from other US counties, came to -14,640. The largest single component was international migration, which added 21,215 people.

766.4k2020766.7k2021774.2k2022781.2k2023787.5k2024
Census Vintage 2024 county estimates for July 1 of each year. The axis starts above zero so year-to-year changes are visible.

Components of change, April 2020 to July 2024

Births
37,060
Deaths
22,270
Net international migration
+21,215
Net domestic migration
-14,640
Change, July 2023 to July 2024
+6,330

Where Cobb County is

The Census internal point of Cobb County is at 33.939900, -84.574100. It sits in UTM zone 16N. The map shades Georgia's 159 county-equivalents by population change from 2020 to 2024, darker for faster growth, with Cobb County outlined. Dots are towns of 1,000+ people with residents in it.

Echols County: -0.6%Wilcox County: +1.3%Polk County: +3.9%Bacon County: -0.6%Webster County: -1.6%Sumter County: -1.9%Jenkins County: +2.0%Gilmer County: +6.1%Murray County: +3.3%Glascock County: +4.0%Fayette County: +4.7%Rockdale County: +4.3%Clay County: -0.5%Dodge County: -1.6%Lamar County: +11.5%Monroe County: +12.0%Jasper County: +17.4%Stephens County: +2.5%Laurens County: +1.5%Johnson County: -0.1%Heard County: +5.9%Bibb County: +0.0%Cook County: +4.3%Schley County: -0.8%Chattooga County: +1.5%Crawford County: +2.0%Dade County: -1.0%Miller County: -2.8%Turner County: +0.4%Cherokee County: +9.5%Lanier County: +5.4%Haralson County: +7.9%Morgan County: +8.6%Towns County: +5.0%Bulloch County: +6.9%Ben Hill County: -1.3%Colquitt County: +2.3%Irwin County: -5.1%Coffee County: +1.8%Gordon County: +5.3%Butts County: +6.2%Franklin County: +7.4%Tift County: +0.8%Atkinson County: +1.5%Marion County: +1.4%Clinch County: +2.2%Madison County: +8.2%Putnam County: +5.5%Greene County: +10.8%Warren County: -1.2%Newton County: +9.8%Union County: +11.3%Forsyth County: +10.7%Baldwin County: -0.3%Seminole County: +1.5%Berrien County: +2.9%Habersham County: +7.6%Burke County: -0.7%Henry County: +7.2%Charlton County: +3.9%Brantley County: +4.2%Liberty County: +5.0%Lowndes County: +3.1%Douglas County: +5.0%Telfair County: -11.7%Randolph County: -4.4%Dooly County: +0.2%Baker County: -4.1%Banks County: +12.0%Catoosa County: +1.4%Walker County: +2.4%Paulding County: +11.2%Twiggs County: -3.5%Candler County: +0.9%Fulton County: +2.0%Elbert County: +2.5%Cobb County: +2.8%Lee County: +2.6%Houston County: +6.4%DeKalb County: +0.7%Taylor County: -0.5%Richmond County: -0.1%Fannin County: +1.6%Decatur County: +0.2%Dougherty County: -3.2%Pulaski County: +3.1%Bartow County: +7.5%Screven County: +1.7%Quitman County: +4.5%Taliaferro County: +4.0%Tattnall County: -0.2%Pierce County: +4.7%Ware County: -0.0%Toombs County: +1.5%McDuffie County: +0.7%Dawson County: +24.7%Clayton County: -0.6%Appling County: +1.6%Clarke County: +1.1%Camden County: +7.6%Crisp County: -2.9%Evans County: +0.7%Upson County: +2.2%Walton County: +13.0%Hall County: +9.0%Montgomery County: -0.0%Whitfield County: +2.2%Jeff Davis County: +2.1%Lincoln County: +4.5%McIntosh County: +7.4%Meriwether County: +4.0%Muscogee County: -2.5%Oconee County: +6.5%Peach County: +4.2%Pike County: +9.1%Wilkinson County: -1.9%Bryan County: +13.5%Chatham County: +4.2%Effingham County: +12.2%Harris County: +5.8%Treutlen County: +0.4%Long County: +25.7%Wayne County: +6.6%Oglethorpe County: +8.8%Wilkes County: +0.2%Jackson County: +22.3%Calhoun County: -2.4%Emanuel County: +1.4%Gwinnett County: +4.7%Talbot County: +0.5%Lumpkin County: +7.1%Spalding County: +4.2%Bleckley County: +0.8%Washington County: -0.6%Macon County: -1.6%Thomas County: +0.6%Grady County: +0.2%Columbia County: +6.8%Pickens County: +9.7%Chattahoochee County: -9.8%Carroll County: +8.7%Coweta County: +7.8%Hancock County: -0.3%White County: +5.5%Jones County: +2.3%Floyd County: +2.8%Mitchell County: -6.2%Glynn County: +2.4%Early County: -3.3%Wheeler County: -5.0%Barrow County: +14.6%Brooks County: +0.4%Hart County: +8.4%Stewart County: -9.2%Terrell County: -4.8%Jefferson County: -4.2%Worth County: -2.3%Rabun County: +4.7%Troup County: +3.1%
Change 2020 to 2024
  1. < -0.6%
  2. < +1.5%
  3. < +4.0%
  4. < +7.2%
  5. ≥ +7.2%
no data

Orange pin: Cobb County internal point. Dark pin: Atlanta.

Internal point

Decimal
33.939900, -84.574100
DMS
33°56'23.64"N 84°34'26.76"W
UTM
16N 724209.7E 3758143.3N
Geohash
dn5c56x40
Plus code
865QWCQG+X9

Towns in Cobb County

7 incorporated places of 1,000+ people have residents in Cobb County, 286,726 people together, or 36% of the county. Each figure counts only the part of the town inside Cobb County; towns marked "part" extend into another county. The largest is Mableton with 78,314.

  1. 01Mableton78,314
  2. 02Marietta63,122
  3. 03Smyrna57,177
  4. 04Kennesaw37,740
  5. 05Acworth22,624
  6. 06Powder Springs19,632
  7. 07Austell (part)8,117
Census Vintage 2024 subcounty estimates, county parts of incorporated places (SUMLEV 157).

Counties bordering Cobb County

The Census 2024 county adjacency file lists 5 neighbors for Cobb County. The most populous is Fulton County, GA, with 1,090,354 residents. Distances run between Census internal points in a straight line.

Distance to Atlanta and the nearest big city

Atlanta is 17.0 miles SE of Cobb County's internal point in a straight line. The nearest place of 100,000 or more is Sandy Springs, GA (population 105,505), 11.8 miles away. The nearest place of 10,000 or more is Marietta, GA (population 63,122), 2.1 miles away.

Cobb County FIPS code

The FIPS code of Cobb County is 13067: state code 13 for Georgia plus county code 067. Use it as text, with the leading zero, when joining Census, BLS, or CDC county tables. SAIPE lists its 2023 median household income as $99,134.

Questions people ask

What is the population of Cobb County, Georgia?

The Census Vintage 2024 estimate for July 1, 2024 is 787,538. That is up 21,155 people (2.8%) from the July 2020 estimate of 766,383.

What is the FIPS code of Cobb County?

13067. The first two digits (13) are Georgia; the last three (067) identify the county.

What is the largest town in Cobb County?

Mableton, with 78,314 residents inside Cobb County in 2024.

Which counties border Cobb County?

5 county-equivalents border it in the Census 2024 adjacency file: Fulton County, GA; Cherokee County, GA; Paulding County, GA; Douglas County, GA; Bartow County, GA.

Sources and data as of

Data as of: Census Vintage 2024 population estimates, 2024 Gazetteer land area and internal points, SAIPE 2023 median household income.

  1. 01Census Vintage 2024 county population estimates
  2. 02Census 2024 Gazetteer, counties
  3. 03Census SAIPE 2023 state and county estimates
  4. 04Census Vintage 2024 subcounty population estimates
  5. 05Census 2024 county adjacency file
  6. 06Census 2024 cartographic boundary file, counties (1:5,000,000)

How every number is computed: methodology. Spotted a wrong figure? Report an error.