30 cities
| City | County | 2026 Pop. ↓ |
|---|---|---|
| Rahway | Union County | 31,685 |
| Rockaway | Morris County | 27,601 |
| Ridgewood village | Bergen County | 27,249 |
| Randolph | Morris County | 26,932 |
| Raritan | Somerset County | 26,408 |
| Roselle | Union County | 23,776 |
| Roxbury | Morris County | 23,477 |
| Rutherford | Bergen County | 19,594 |
| Robbinsville | Mercer County | 16,632 |
| Readington | Hunterdon County | 16,479 |
| Ramsey | Bergen County | 15,331 |
| Roselle Park | Union County | 14,844 |
| Ridgefield Park village | Bergen County | 13,680 |
| Red Bank | Monmouth County | 12,848 |
| River Edge | Bergen County | 12,495 |
| Ringwood | Passaic County | 12,062 |
| Ridgefield | Bergen County | 11,964 |
| River Vale | Bergen County | 10,807 |
| Raritan | Somerset County | 8,752 |
| Runnemede | Camden County | 8,515 |
| Riverside | Burlington County | 8,284 |
| Rumson | Monmouth County | 7,179 |
| Rockaway | Morris County | 6,675 |
| Roseland | Essex County | 6,564 |
| Rochelle Park | Bergen County | 6,246 |
| Riverdale | Morris County | 4,160 |
| Riverton | Burlington County | 2,874 |
| Roosevelt | Monmouth County | 808 |
| Rocky Hill | Somerset County | 773 |
| Rockleigh | Bergen County | 410 |