CITY · CT

What county is Hartford, CT in?

Hartford, CT is mostly in Hartford County. County FIPS code 09003.

County details

City: Hartford, Connecticut
Primary county: Hartford County
FIPS code: 09003

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

Questions

What county is Hartford in?

Hartford, CT is mostly in Hartford County.

What is the county seat of Hartford 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.