Warren County, New Jersey
16 ZIP codes · 356.54 sq mi of land · FIPS 34041
| Population | 110,849 |
|---|---|
| State | New Jersey |
| FIPS code | 34041 |
| Time zone | Eastern |
| Land area | 356.54 sq mi |
| Center (lat, long) | 40.8535, -75.0095 |
Area codes in this area
These are the area codes that most often serve Warren County (including overlays). The exact area code depends on the phone number — landlines, mobiles and overlays can differ even on the same street.
Cities and towns (largest first)
Phillipsburg · 15,299AllamuchyBelvidereBlairstownChangewaterColumbiaDelawareGreat MeadowsHackettstownHopeJohnsonburgOxfordPort MurrayViennaWashingtonStewartsville
ZIP codes in Warren County
07820 Allamuchy07823 Belvidere07825 Blairstown07831 Changewater07832 Columbia07833 Delaware07838 Great Meadows07840 Hackettstown07844 Hope07846 Johnsonburg07863 Oxford07865 Port Murray07880 Vienna07882 Washington08865 Phillipsburg08886 Stewartsville
Population: U.S. Census Bureau, ACS 5-year estimates, 2024.