| Zip Code | City | Population ↓ |
|---|---|---|
| 7055 | Passaic | 70,048 |
| 7470 | Wayne | 54,557 |
| 7011 | Clifton | 40,042 |
| 7501 | Paterson | 35,492 |
| 7013 | Clifton | 29,725 |
| 7424 | Little Falls | 27,474 |
| 7508 | Haledon | 23,631 |
| 7522 | Paterson | 22,377 |
| 7503 | Paterson | 19,625 |
| 7506 | Hawthorne | 19,456 |
| 7514 | Paterson | 18,461 |
| 7502 | Paterson | 17,328 |
| 7524 | Paterson | 15,139 |
| 7480 | West Milford | 14,884 |
| 7012 | Clifton | 14,870 |
| 7504 | Paterson | 13,781 |
| 7456 | Ringwood | 11,692 |
| 7513 | Paterson | 11,069 |
| 7442 | Pompton Lakes | 11,052 |
| 7512 | Totowa | 10,975 |
| 7403 | Bloomingdale | 7,726 |
| 7421 | Hewitt | 7,312 |
| 7465 | Wanaque | 6,032 |
| 7420 | Haskell | 5,185 |
| 7505 | Paterson | 4,592 |
| 7014 | Clifton | 4,098 |
| 7435 | Newfoundland | 2,453 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 27 ZCTAs in Passaic County, New Jersey (US Census).