| Name | What | Region | Country | Lat | Long | Elev Ft. | Pop Est |
|---|
| Ukrainian Village | city | New Jersey | United States | 40.52778 | -74.51333 | 98 | 91694 |
| Undercliff | city | New Jersey | United States | 40.88806 | -73.94111 | 3 | 698441 |
| Undercliff Junction | city | New Jersey | United States | 40.82861 | -74.02444 | 6 | 593650 |
| Union | city | New Jersey | United States | 40.66944 | -74.92444 | 269 | 17832 |
| Union | city | New Jersey | United States | 40.6975 | -74.26361 | 95 | 326979 |
| Union Beach | city | New Jersey | United States | 40.44639 | -74.17861 | 16 | 85991 |
| Union City | city | New Jersey | United States | 40.77944 | -74.02417 | 157 | 993118 |
| Union Grove | city | New Jersey | United States | 39.64083 | -75.2825 | 95 | 7207 |
| Union Hill | city | New Jersey | United States | 40.86722 | -74.5225 | 793 | 75860 |
| Union Landing | city | New Jersey | United States | 40.02194 | -74.99667 | 6 | 147191 |
| Union Mills | city | New Jersey | United States | 39.85306 | -74.90972 | 98 | 58308 |
| Union Mills | city | New Jersey | United States | 39.97222 | -74.85639 | 22 | 55750 |
| Union Square | city | New Jersey | United States | 40.65861 | -74.20278 | 13 | 239045 |
| Union Valley | city | New Jersey | United States | 40.30361 | -74.45639 | 134 | 28757 |
| Union Village | city | New Jersey | United States | 40.66667 | -74.45583 | 357 | 76626 |
| Unionburg | city | New Jersey | United States | 40.70528 | -74.28167 | 101 | 326979 |
| Uniontown | city | New Jersey | United States | 40.72056 | -75.14083 | 419 | 23679 |
| Unionville | city | New Jersey | United States | 40.42861 | -74.84 | 200 | 10598 |
| Unionville | city | New Jersey | United States | 40.00528 | -74.765 | 72 | 27420 |
| Unionville | city | New Jersey | United States | 39.52694 | -74.50167 | 16 | 13016 |
| Upper Greenwood Lake | city | New Jersey | United States | 41.18167 | -74.3825 | 1099 | 14158 |
| Upper Longwood | city | New Jersey | United States | 40.97722 | -74.54583 | 1099 | 18415 |
| Upper Macopin | city | New Jersey | United States | 41.085 | -74.38611 | 1026 | 15695 |
| Upper Mill | city | New Jersey | United States | 39.9125 | -74.57389 | 88 | 8673 |
| Upper Mohawk | city | New Jersey | United States | 41.03111 | -74.66361 | 898 | 20902 |
| Upper Montclair | city | New Jersey | United States | 40.84611 | -74.20167 | 242 | 294238 |
| Upper Montvale | city | New Jersey | United States | 41.06056 | -74.0525 | 324 | 108694 |
| Upper Saddle River | city | New Jersey | United States | 41.05833 | -74.09889 | 200 | 89347 |
| Upton | city | New Jersey | United States | 39.93472 | -74.52444 | 98 | 16241 |
| Uttertown | city | New Jersey | United States | 41.12667 | -74.41667 | 1197 | 12999 |
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