| Locality | Post Code |
|---|---|
| Allamuchy, Warren | 07820 |
| Alpha, Warren | 08865 |
| Belvidere, Warren | 07823 |
| Blairstown, Warren | 07825 |
| Broadway, Warren | 08808 |
| Buttzville, Warren | 07829 |
| Changewater, Warren | 07831 |
| Columbia, Warren | 07832 |
| Delaware, Warren | 07833 |
| Delaware Park, Warren | 08865 |
| Great Meadows, Warren | 07838 |
| Hackettstown, Warren | 07840 |
| Hardwick, Warren | 07825 |
| Harmony, Warren | 08865 |
| Hope, Warren | 07844 |
| Johnsonburg, Warren | 07825 |
| Lopatcong, Warren | 08865 |
| Oxford, Warren | 07863 |
| Phillipsburg, Warren | 08865 |
| Port Murray, Warren | 07865 |
| Stewartsville, Warren | 08886 |
| Vienna, Warren | 07880 |
| Washington, Warren | 07882 |