COUNTY · NJ
Essex County, New Jersey
Essex County is a county in New Jersey with FIPS code 34013 and an estimated population of 851,117 (Census 2023), 3rd largest of 21 in the state.
County facts
- Name
- Essex County
- State
- New Jersey
- Type
- county
- FIPS code
- 34013
- State FIPS
- 34
- Population (2023)
- 851,117
- Change since 2020
- -1.0%
- State rank
- 3 of 21
Population is the Census Bureau’s Vintage 2023 estimate.
Major cities in Essex County
Other counties in New Jersey
Questions
What is the FIPS code for Essex County?
Essex County, New Jersey has the five-digit FIPS code 34013: 34 for the state and 013 for the county.
What state is Essex County in?
Essex 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.