| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density (/mi²) | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Paterson | 1 | 161,849 | 159,276 | 0.03% | 19,238 | 8 | City |
| Clifton | 2 | 91,227 | 89,548 | 0.11% | 8,091 | 11 | City |
| Passaic | 3 | 71,357 | 70,313 | 0.03% | 22,776 | 3 | City |
| Wayne | 4 | 54,857 | 54,541 | 0.07% | 2,312 | 24 | Township |
| West Milford | 5 | 25,245 | 24,779 | 0.12% | 332 | 76 | Township |
| Hawthorne | 6 | 20,169 | 19,568 | 0% | 6,079 | 3 | Borough |
| Little Falls | 7 | 15,543 | 14,664 | 1.32% | 5,561 | 3 | Township |
| Woodland Park | 8 | 13,627 | 13,447 | 0.03% | 4,635 | 3 | Borough |
| Ringwood | 9 | 11,854 | 11,687 | 0.01% | 463 | 26 | Borough |
| Wanaque | 10 | 11,446 | 11,200 | 0.25% | 1,420 | 8 | Borough |
| Pompton Lakes | 11 | 11,246 | 11,093 | 0% | 3,894 | 3 | Borough |
| Totowa | 12 | 11,184 | 11,020 | 0.16% | 2,796 | 4 | Borough |
| Haledon | 13 | 9,127 | 9,009 | 0.02% | 7,512 | 1 | Borough |
| North Haledon | 14 | 9,092 | 8,909 | 0.03% | 2,625 | 3 | Borough |
| Bloomingdale | 15 | 7,856 | 7,735 | 0.04% | 893 | 9 | Borough |
| Prospect Park | 16 | 6,452 | 6,367 | 0.03% | 13,875 | 0 | Borough |
Paterson is the largest city in Passaic County, with a population of 161,849.
Prospect Park is the smallest city in Passaic County, with a population of 6,452.
There are 16 cities in Passaic County, New Jersey.