19 zips
| Zip Code | City | Population ↓ |
|---|---|---|
| 98841 | Omak | 9,218 |
| 98855 | Tonasket | 5,806 |
| 98812 | Brewster | 5,422 |
| 98840 | Okanogan | 4,775 |
| 98844 | Oroville | 4,348 |
| 98862 | Winthrop | 3,075 |
| 98856 | Twisp | 2,497 |
| 99116 | Coulee Dam | 1,538 |
| 98846 | Pateros | 1,381 |
| 98849 | Riverside | 1,098 |
| 99155 | Nespelem | 977 |
| 98814 | Carlton | 688 |
| 98829 | Malott | 638 |
| 98827 | Loomis | 479 |
| 98859 | Wauconda | 353 |
| 99124 | Elmer City | 270 |
| 98834 | Methow | 245 |
| 98819 | Conconully | 205 |
| 98833 | Mazama | 153 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 19 ZCTAs in Okanogan County, Washington (US Census).