Zip Code | City | Population |
|---|---|---|
| 08540 | Princeton | 48,513 |
| 08618 | Trenton | 39,047 |
| 08610 | Trenton | 32,324 |
| 08611 | Trenton | 31,660 |
| 08648 | Lawrence Township | 31,626 |
| 08520 | Hightstown | 29,296 |
| 08638 | Trenton | 23,804 |
| 08619 | Trenton | 23,446 |
| 08550 | Princeton Junction | 20,954 |
| 08690 | Trenton | 19,959 |
| 08691 | Robbinsville | 16,935 |
| 08629 | Trenton | 13,075 |
| 08534 | Pennington | 12,990 |
| 08620 | Trenton | 12,913 |
| 08609 | Trenton | 12,799 |
| 08628 | Trenton | 9,107 |
| 08525 | Hopewell | 4,554 |
| 08544 | Princeton | 4,504 |
| 08560 | Titusville | 3,689 |
| 08542 | Princeton | 2,595 |
| 08608 | Trenton | 786 |
| 08561 | Windsor | 328 |