| Locality | Postal Code |
|---|---|
| Bradford, McKean | 16701 |
| Crosby, McKean | 16724 |
| Custer City, McKean | 16725 |
| Cyclone, McKean | 16726 |
| Derrick City, McKean | 16727 |
| Duke Center, McKean | 16729 |
| East Kane, McKean | 16735 |
| East Smethport, McKean | 16730 |
| Eldred, McKean | 16731 |
| Gifford, McKean | 16732 |
| Hazel Hurst, McKean | 16733 |
| Kane, McKean | 16735 |
| Keating Summit, McKean | 16749 |
| Kendall Creek, McKean | 16701 |
| Lewis Run, McKean | 16738 |
| Ludlow, McKean | 16333 |
| Mount Jewett, McKean | 16740 |
| Ormsby, McKean | 16726 |
| Port Allegany, McKean | 16743 |
| Rew, McKean | 16744 |
| Rixford, McKean | 16745 |
| Smethport, McKean | 16749 |
| Turtlepoint, McKean | 16750 |
| Westline, McKean | 16740 |