9 cities
| City | County | 2025 Pop. ↓ |
|---|---|---|
| Union City city | Hudson County | 63,916 |
| Union township | Union County | 60,934 |
| Upper township | Cape May County | 12,354 |
| Upper Saddle River borough | Bergen County | 8,880 |
| Upper Deerfield township | Cumberland County | 7,904 |
| Upper Freehold township | Monmouth County | 7,135 |
| Union township | Union County | 6,489 |
| Union Beach borough | Monmouth County | 5,619 |
| Upper Pittsgrove township | Salem County | 3,498 |