CITY · KY

What county is Lexington, KY in?

Lexington, KY is mostly in Fayette County. County FIPS code 21067, population 320,154 (2023 estimate).

County details

City: Lexington, Kentucky
Primary county: Fayette County
FIPS code: 21067
County population: 320,154

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

Questions

What county is Lexington in?

Lexington, KY is mostly in Fayette County.

What is the county seat of Fayette 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.