COUNTY · NJ
Atlantic County, New Jersey
Atlantic County is a county in New Jersey with FIPS code 34001 and an estimated population of 275,213 (Census 2023), 15th largest of 21 in the state.
County facts
- Name
- Atlantic County
- State
- New Jersey
- Type
- county
- FIPS code
- 34001
- State FIPS
- 34
- Population (2023)
- 275,213
- Change since 2020
- +0.4%
- State rank
- 15 of 21
Population is the Census Bureau’s Vintage 2023 estimate.
Major cities in Atlantic County
Other counties in New Jersey
Questions
What is the FIPS code for Atlantic County?
Atlantic County, New Jersey has the five-digit FIPS code 34001: 34 for the state and 001 for the county.
What state is Atlantic County in?
Atlantic County is in New Jersey.
How do I know if an address is in this county?
Use the address lookup. ZIP codes and city names can cross county lines, so an address is the reliable check.
Sources: U.S. Census Bureau geographic reference files; Census Bureau Population Estimates, Vintage 2023. Last reviewed 2026-10-27.