19 zips
| Zip Code | City | Population ↓ |
|---|---|---|
| 98841 | Omak | 9,376 |
| 98855 | Tonasket | 5,615 |
| 98812 | Brewster | 5,188 |
| 98840 | Okanogan | 5,084 |
| 98844 | Oroville | 4,814 |
| 98862 | Winthrop | 3,089 |
| 98856 | Twisp | 2,654 |
| 99116 | Coulee Dam | 1,649 |
| 98846 | Pateros | 1,313 |
| 98849 | Riverside | 1,123 |
| 99155 | Nespelem | 996 |
| 98859 | Wauconda | 476 |
| 98814 | Carlton | 465 |
| 98829 | Malott | 441 |
| 98827 | Loomis | 353 |
| 99124 | Elmer City | 296 |
| 98833 | Mazama | 238 |
| 98834 | Methow | 228 |
| 98819 | Conconully | 208 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 19 ZCTAs in Okanogan County, Washington (US Census).