| population | |
| City of Brewster | 2370 |
| City of Okanogan | 2552 |
| City of Omak | 4845 |
| City of Oroville | 1686 |
| City of Pateros | 667 |
| population | |
| City of Tonasket | 1032 |
| Town of Conconully | 210 |
| Town of Coulee Dam | 1098 |
| Town of Elmer City | 238 |
| Town of Nespelem | 236 |
| population | |
| Town of Riverside | 280 |
| Town of Twisp | 919 |
| Town of Winthrop | 394 |
 | Omak Airport | ~ 18.91 km |
| Grand Coulee Dam Airport | ~ 85.04 km |
 | Penticton Airport | ~ 102.16 km |
| Grand Forks Airport | ~ 109.10 km |
| Pangborn Memorial Airport | ~ 132.49 km |
| Ephrata Municipal Airport | ~ 139.03 km |
| Grant County International Airport | ~ 152.39 km |
| Hope Airport / FVRD Regional Airpark | ~ 157.21 km |
| Kelowna International Airport | ~ 158.68 km |
