Warren County, New Jersey ZIP codes
18 ZIP codes are in Warren County, plus 6 that cross in from neighboring counties. It's part of the Allentown-Bethlehem-Easton, PA-NJ metro area.
- ZIP codes
- 18
- Population in these ZIPs
- 116,142
- Avg. median income
- $102,400population-weighted
- Cities & towns
- 18
Click anywhere on the map to see which ZIP code it's in.
ZIP codes in Warren County
| ZIP code | City | Population | Median income | Typical home value |
|---|---|---|---|---|
| 07820 | Allamuchy | 0 | — | — |
| 07823 | Belvidere | 7,451 | $85,522 | $380,800 |
| 07825 | Blairstown | 9,210 | $123,785 | $496,700 |
| 07829 PO Box | Buttzville | — | — | — |
| 07831 | Changewater | 36 | — | — |
| 07832 | Columbia | 3,593 | $106,424 | $458,400 |
| 07833 | Delaware | 70 | — | $210,000 |
| 07838 | Great Meadows | 3,727 | $121,599 | $472,500 |
| 07840 | Hackettstown | 32,105 | $105,866 | $490,300 |
| 07844 | Hope | 111 | $80,221 | — |
| 07846 | Johnsonburg | 45 | $99,792 | $408,300 |
| 07863 | Oxford | 3,819 | $94,167 | $392,100 |
| 07865 | Port Murray | 2,825 | $108,056 | $505,900 |
| 07880 | Vienna | 173 | — | — |
| 07882 | Washington | 15,115 | $107,567 | $415,800 |
| 08808 PO Box | Broadway | — | — | — |
| 08865 | Phillipsburg | 31,427 | $79,949 | $335,900 |
| 08886 | Stewartsville | 6,435 | $161,168 | $504,200 |
ZIP codes partly in Warren County
These ZIP codes are mostly in a neighboring county but cover part of Warren County.
| ZIP code | City | County | Population | Median income | Typical home value |
|---|---|---|---|---|---|
| 07821 | Andover | Sussex County | 9,662 | $141,860 | $523,800 |
| 07860 | Newton | Sussex County | 26,047 | $110,045 | $443,800 |
| 07874 | Stanhope | Sussex County | 8,752 | $132,500 | $450,700 |
| 08802 | Asbury | Hunterdon County | 4,552 | $135,689 | $603,600 |
| 08804 | Bloomsbury | Hunterdon County | 3,465 | $107,333 | $493,900 |
| 08827 | Hampton | Hunterdon County | 4,346 | $135,625 | $602,800 |
Population and median household income: ACS 2020–2024 5-year estimates. Typical home value: Zillow Home Value Index (September 2026) where available, otherwise the ACS median owner-reported value. "PO Box" marks ZIP codes with no delivery area of their own. Methodology
Cities and towns in Warren County
Nearby counties
Frequently asked questions
How many ZIP codes are in Warren County, New Jersey?
18 ZIP codes are mainly in Warren County, and 6 more ZIP codes from neighboring areas reach partly into it.
What cities are in Warren County?
ZIP codes in Warren County use the city names Allamuchy, Belvidere, Blairstown, Broadway, Buttzville, Changewater, Columbia, Delaware, Great Meadows, Hackettstown, Hope and Johnsonburg and others.
What metro area is Warren County in?
Warren County is part of the Allentown-Bethlehem-Easton, PA-NJ metropolitan statistical area.