CITY · GA

What county is Atlanta, GA in?

Atlanta, GA is mostly in Fulton County. County FIPS code 13121, population 1,079,105 (2023 estimate).

County details

City: Atlanta, Georgia
Primary county: Fulton County
FIPS code: 13121
County population: 1,079,105

Some cities extend into more than one county. Atlanta is placed in the county that contains its center. For a specific address, use the address lookup.

Questions

What county is Atlanta in?

Atlanta, GA is mostly in Fulton County.

What is the county seat of Fulton County?

County seats are not part of the data on this site. Check the county’s official website.

Can a city be in two counties?

Yes. Large cities such as Houston and Atlanta cross county lines. The address lookup shows the exact county for any street address.

Sources: U.S. Census Bureau geographic reference files; FCC Area API; Census Bureau Population Estimates, Vintage 2023. Last reviewed 2026-10-27.