19 zips
| Zip Code | City | Population ↓ |
|---|---|---|
| 98841 | Omak | 9,737 |
| 98855 | Tonasket | 5,857 |
| 98840 | Okanogan | 4,892 |
| 98844 | Oroville | 4,873 |
| 98812 | Brewster | 4,834 |
| 98862 | Winthrop | 2,995 |
| 98856 | Twisp | 2,920 |
| 99116 | Coulee Dam | 1,786 |
| 98846 | Pateros | 1,376 |
| 98849 | Riverside | 1,096 |
| 99155 | Nespelem | 1,009 |
| 98814 | Carlton | 473 |
| 98859 | Wauconda | 435 |
| 98829 | Malott | 361 |
| 99124 | Elmer City | 326 |
| 98827 | Loomis | 289 |
| 98833 | Mazama | 245 |
| 98819 | Conconully | 182 |
| 98834 | Methow | 178 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 19 ZCTAs in Okanogan County, Washington (US Census).