Identifiers: city · town · borough · CDP
| Rank | Community | Population |
|---|---|---|
| 1 | Newark (city), NJ | 311,549 |
| 2 | East Orange (city), NJ | 69,612 |
| 3 | New Brunswick (city), NJ | 55,266 |
| 4 | Plainfield (city), NJ | 54,586 |
| 5 | Westfield (town), NJ | 31,032 |
| 6 | South Plainfield (borough), NJ | 24,338 |
| 7 | Somerset (CDP), NJ | 22,968 |
| 8 | North Plainfield (borough), NJ | 22,808 |
| 9 | Parsippany (CDP), NJ | 22,778 |
| 10 | Summit (city), NJ | 22,719 |
| 11 | Hillsborough (CDP), NJ | 22,214 |
| 12 | Morristown (town), NJ | 20,180 |
| 13 | Madison (borough), NJ | 16,937 |
| 14 | Highland Park (borough), NJ | 15,072 |
| 15 | Metuchen (borough), NJ | 15,049 |
| 16 | Middlesex (borough), NJ | 14,636 |
| 17 | Short Hills (CDP), NJ | 14,422 |
| 18 | Bradley Gardens (CDP), NJ | 14,077 |
| 19 | Roselle Park (borough), NJ | 13,967 |
| 20 | New Providence (borough), NJ | 13,650 |