CITY · TN

What county is Chattanooga, TN in?

Chattanooga, TN is mostly in Hamilton County. County FIPS code 47065, population 379,864 (2023 estimate).

County details

City: Chattanooga, Tennessee
Primary county: Hamilton County
FIPS code: 47065
County population: 379,864

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

Questions

What county is Chattanooga in?

Chattanooga, TN is mostly in Hamilton County.

What is the county seat of Hamilton 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.