15 zips
| Zip Code | City | Population ↓ |
|---|---|---|
| 99611 | Kenai | 16,510 |
| 99669 | Soldotna | 15,395 |
| 99603 | Homer | 11,693 |
| 99664 | Seward | 4,698 |
| 99672 | Sterling | 4,091 |
| 99556 | Anchor Point | 2,866 |
| 99610 | Kasilof | 2,222 |
| 99639 | Ninilchik | 1,175 |
| 99568 | Clam Gulch | 465 |
| 99663 | Seldovia | 417 |
| 99682 | Tyonek | 295 |
| 99572 | Cooper Landing | 241 |
| 99631 | Moose Pass | 222 |
| 99635 | Nikiski | 100 |
| 99605 | Hope | 23 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 15 ZCTAs in Kenai Peninsula Borough, Alaska (US Census).