15 zips
| Zip Code | City | Population ↓ |
|---|---|---|
| 99669 | Soldotna | 17,382 |
| 99611 | Kenai | 15,188 |
| 99603 | Homer | 11,234 |
| 99664 | Seward | 4,197 |
| 99672 | Sterling | 3,473 |
| 99556 | Anchor Point | 2,759 |
| 99610 | Kasilof | 1,895 |
| 99639 | Ninilchik | 1,234 |
| 99568 | Clam Gulch | 487 |
| 99663 | Seldovia | 401 |
| 99682 | Tyonek | 274 |
| 99572 | Cooper Landing | 234 |
| 99631 | Moose Pass | 216 |
| 99605 | Hope | 147 |
| 99635 | Nikiski | 114 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 15 ZCTAs in Kenai Peninsula Borough, Alaska (US Census).