Zip Code | City | Population |
|---|---|---|
| 16701 | Bradford | 16,800 |
| 16735 | Kane | 6,411 |
| 16749 | Smethport | 4,020 |
| 16743 | Port Allegany | 3,894 |
| 16731 | Eldred | 2,364 |
| 16738 | Lewis Run | 2,111 |
| 16740 | Mount Jewett | 896 |
| 16729 | Duke Center | 689 |
| 16745 | Rixford | 631 |
| 16750 | Turtlepoint | 542 |
| 16726 | Cyclone | 518 |
| 16744 | Rew | 225 |
| 16727 | Derrick City | 219 |
| 16333 | Ludlow | 212 |
| 16732 | Gifford | 182 |
| 16733 | Hazel Hurst | 173 |
| 16724 | Crosby | 85 |
| 16725 | Custer City | 75 |
| 16730 | East Smethport | 42 |