Warren County New Jersey Assessor/Tax Collector Phone Number Directory
| Municipality | Tax Assessor | Tax Collector | Website |
|---|---|---|---|
| Allamuchy Township | (908) 852-6514 | (908) 852-6356 | Link |
| Alpha Borough | (908) 454-0088 121 | (908) 454-0088 120 | Link |
| Belvidere Town | (908) 475-5331 6 | (908) 475-5331 5 | Link |
| Blairstown Township | (908) 362-6663 228 | (908) 362-6663 225 | Link |
| Franklin Township | (908) 689-3994 20 | (908) 689-3994 19 | Link |
| Frelinghuysen Township | (908) 852-4121 | (908) 852-4121 | Link |
| Greenwich Township | (908) 859-0909 3 | (908) 859-0909 3 | Link |
| Hackettstown Town | (908) 852-6767 | (908) 852-3130 | Link |
| Hardwick Township | (908) 362-6528 2 | (908) 362-6528 1 | Link |
| Harmony Township | (908) 213-1600 13 | (908) 213-1600 16 | Link |
| Hope Township | (908) 459-5011 | (908) 459-5011 | Link |
| Independence Township | (908) 637-4133 1014 | (908) 637-4133 1013 | Link |
| Knowlton Township | (908) 496-4783 | (908) 496-4076 | Link |
| Liberty Township | (908) 637-4579 13 | (908) 637-4579 15 | Link |
| Lopatcong Township | (908) 859-3355 226 | (908) 859-3355 225 | Link |
| Mansfield Township | (908) 689-6151 117 | (908) 689-6151 115 | Link |
| Oxford Township | (908) 453-3380 | (908) 453-3529 | Link |
| Phillipsburg Town | (908) 454-5500 306 | (908) 454-5500 305 | Link |
| Pohatcong Township | (908) 454-6121 316 | (908) 454-6121 322 | Link |
| Washington Borough | (908) 689-3600 127 | (908) 689-3600 114 | Link |
| Washington Township | (908) 689-8862 | (908) 689-1975 | Link |
| White Township | (908) 475-3279 | (908) 475-3586 | Link |