Warren County, New Jersey
Warren County is a county in New Jersey. Its county FIPS code is 34041. Use the boundary map and neighboring areas below to check the jurisdiction you need.
- Official code
- 34041
- Representative coordinates
- 40.853491, -75.009498
- County type
- County
- County seat or government
- Belvidere
- Resident population, July 2025
- 112,953
- Land area
- 923.437 km²
- Water area
- 15.824 km²
- State
- New Jersey
The representative point identifies this area. It is not a street address or a boundary survey.
Time zones in Warren County
| Time zone | Local time and UTC offset | Next clock change |
|---|---|---|
| America/New_York | UTC-05:00 in January; UTC-04:00 in July. Enable JavaScript for the live clock. | Enable JavaScript for upcoming changes. |
Listed zones overlap the mapped area. A point lookup can distinguish sides of a boundary. Your device’s zone may differ.
Census ZIP areas
07820 · 07821 · 07823 · 07825 · 07831 · 07832 · 07833 · 07838 · 07840 · 07844 · 07846 · 07860 · 07863 · 07865 · 07874 · 07880 · 07882 · 08802 · 08804 · 08827 · 08865 · 08886
These statistical areas overlap the boundary. They are not delivery assignments; confirm mailing details with USPS ZIP Code Lookup.
Official county information
Use the US government local-office directory ↗ to find the office responsible for your address. A county website has not been confidently matched here. A geographic lookup cannot determine eligibility, tax liability or a court obligation.
Cities, towns and communities
These areas overlap the mapped boundary; an overlap does not mean that every address belongs to both.
- Allamuchy CDP, NJ
- Alpha borough, NJ
- Anderson CDP, NJ
- Asbury CDP, NJ
- Beattystown CDP, NJ
- Belvidere town, NJ
- Blairstown CDP, NJ
- Brainards CDP, NJ
- Brass Castle CDP, NJ
- Bridgeville CDP, NJ
- Broadway CDP, NJ
- Brookfield CDP, NJ
- Buttzville CDP, NJ
- Columbia CDP, NJ
- Delaware CDP, NJ
- Delaware Park CDP, NJ
- Finesville CDP, NJ
- Great Meadows CDP, NJ
- Greenwich CDP, NJ
- Hackettstown town, NJ
- Hainesburg CDP, NJ
- Harmony CDP, NJ
- Hope CDP, NJ
- Hutchinson CDP, NJ
- Johnsonburg CDP, NJ
- Lopatcong Overlook CDP, NJ
- Marksboro CDP, NJ
- Mountain Lake CDP, NJ
- Mount Hermon CDP, NJ
- New Village CDP, NJ
Areas sharing the mapped boundary
These areas touch this mapped boundary.
Before using this answer on a form
Use a precise point for address-level questions. A device accuracy circle can cross a boundary; confirm tax, voting or jury details with the responsible office.
Find the county at your current point, check its ZIP area, or find its physical time zone.