CITY · FL

What county is Naples, FL in?

Naples, FL is mostly in Collier County. County FIPS code 12021, population 404,310 (2023 estimate).

County details

City: Naples, Florida
Primary county: Collier County
FIPS code: 12021
County population: 404,310

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

Questions

What county is Naples in?

Naples, FL is mostly in Collier County.

What is the county seat of Collier 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.