CITY · NJ

What county is Newark, NJ in?

Newark, NJ is mostly in Essex County. County FIPS code 34013, population 851,117 (2023 estimate).

County details

City: Newark, New Jersey
Primary county: Essex County
FIPS code: 34013
County population: 851,117

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

Questions

What county is Newark in?

Newark, NJ is mostly in Essex County.

What is the county seat of Essex 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.