Identifiers: city · town · borough · CDP
| Rank | Community | Population |
|---|---|---|
| 1 | Newark (city), NJ | 311,549 |
| 2 | Elizabeth (city), NJ | 137,298 |
| 3 | East Orange (city), NJ | 69,612 |
| 4 | New Brunswick (city), NJ | 55,266 |
| 5 | Plainfield (city), NJ | 54,586 |
| 6 | Westfield (town), NJ | 31,032 |
| 7 | Rahway (city), NJ | 29,556 |
| 8 | South Plainfield (borough), NJ | 24,338 |
| 9 | Somerset (CDP), NJ | 22,968 |
| 10 | North Plainfield (borough), NJ | 22,808 |
| 11 | Parsippany (CDP), NJ | 22,778 |
| 12 | Summit (city), NJ | 22,719 |
| 13 | Roselle (borough), NJ | 22,695 |
| 14 | Hillsborough (CDP), NJ | 22,214 |
| 15 | Morristown (town), NJ | 20,180 |
| 16 | Iselin (CDP), NJ | 20,088 |
| 17 | Harrison (town), NJ | 19,450 |
| 18 | Colonia (CDP), NJ | 18,609 |
| 19 | Madison (borough), NJ | 16,937 |
| 20 | Avenel (CDP), NJ | 16,920 |
Identifiers: city · town · borough · CDP
| Rank | Community | Population |
|---|---|---|
| 1 | Newark (city), NJ | 311,549 |
| 2 | Elizabeth (city), NJ | 137,298 |
| 3 | East Orange (city), NJ | 69,612 |
| 4 | New Brunswick (city), NJ | 55,266 |
| 5 | Plainfield (city), NJ | 54,586 |
| 6 | Westfield (town), NJ | 31,032 |
| 7 | Rahway (city), NJ | 29,556 |
| 8 | South Plainfield (borough), NJ | 24,338 |
| 9 | Somerset (CDP), NJ | 22,968 |
| 10 | North Plainfield (borough), NJ | 22,808 |
| 11 | Parsippany (CDP), NJ | 22,778 |
| 12 | Summit (city), NJ | 22,719 |
| 13 | Roselle (borough), NJ | 22,695 |
| 14 | Hillsborough (CDP), NJ | 22,214 |
| 15 | Morristown (town), NJ | 20,180 |
| 16 | Iselin (CDP), NJ | 20,088 |
| 17 | Harrison (town), NJ | 19,450 |
| 18 | Colonia (CDP), NJ | 18,609 |
| 19 | Madison (borough), NJ | 16,937 |
| 20 | Avenel (CDP), NJ | 16,920 |