Cobb County

Formed in 1832, Cobb County was originally part of Cherokee County and was named after Judge Thomas Willis Cobb, a U.S. Senator.

Notable landmarks include Kennesaw State University, the Marietta National Cemetery and Kennesaw Mountain National Battlefield Park. Large employers include WellStar Health System, Lockheed Martin Aeronautical and Cobb County Schools.

Cobb has experienced substantial growth in the past few decades and has become one of the most populated counties in the region.

Within Cobb County are the cities of Acworth, Austell*, Kennesaw, Mableton, Marietta, Powder Springs, and Smyrna.

Cobb County by the Numbers (2021)

Population 766,802
Population Change (since 2010) +11.4%
Population Forecast (2050) 1,035,796
Median Household Income $81,517
Unemployment Rate 2.7%
Mean Travel Time to Work 31 minutes
Single Family Building Permits 1,966 units
Multifamily Building Permits 987 units
View ARC's 21-County Dashboard where you can find various data points about Cobb County.

Data Resources

Other Cobb County Resources

ARC Board Members Representing Cobb

Data Sources

  • US Census Bureau, County Population Estimates, 2021
  • US Census Bureau, Small-Area Income and Poverty Estimates, 2020
  • US Census Bureau, American Community Survey (5-year estimates), 206-2020
  • Atlanta Regional Commission (ARC), Series 16 Forecasts
  • HUD, State of the Cities Data System (SOCDS), 2021


* This city belongs to more than one county.