CITY · NJ

What county is Atlantic City, NJ in?

Atlantic City, NJ is mostly in Atlantic County. County FIPS code 34001, population 275,213 (2023 estimate).

County details

City: Atlantic City, New Jersey
Primary county: Atlantic County
FIPS code: 34001
County population: 275,213

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

Questions

What county is Atlantic City in?

Atlantic City, NJ is mostly in Atlantic County.

What is the county seat of Atlantic 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.