19 ZIP Codes
| Zip Code | City | Population ↓ |
|---|---|---|
| 16701 | Bradford | 16,556 |
| 16735 | Kane | 6,149 |
| 16743 | Port Allegany | 4,061 |
| 16749 | Smethport | 3,777 |
| 16731 | Eldred | 2,407 |
| 16738 | Lewis Run | 2,118 |
| 16740 | Mount Jewett | 878 |
| 16729 | Duke Center | 684 |
| 16726 | Cyclone | 665 |
| 16745 | Rixford | 592 |
| 16750 | Turtlepoint | 464 |
| 16333 | Ludlow | 248 |
| 16732 | Gifford | 241 |
| 16733 | Hazel Hurst | 226 |
| 16744 | Rew | 187 |
| 16725 | Custer City | 147 |
| 16724 | Crosby | 69 |
| 16727 | Derrick City | 37 |
| 16730 | East Smethport | 27 |
The data shown reflect ZCTAs from the US Census. As of 2025, there are 19 ZCTAs in McKean County, Pennsylvania (US Census).