Founded in 1883, Douglas County is one of 39 counties in the state of Washington. Historically, Douglas County was formed from Lincoln County. The city of Waterville is the county seat. With FIPS code of 17, Douglas County has a population of 42,938 and area of 1,819 square miles (4,711 km2).
List of all cities in Douglas County, WA alphabetically
| City/Town | Postal Code | Area Code |
| Bridgeport, WA | 98813 | 509 |
| Douglas, WA | 98858 | 509 |
| East Wenatchee, WA | 98802 | 509 |
| Farmer, WA | 98858 | 509 |
| Mansfield, WA | 98830 | 509 |
| Orondo, WA | 98843 | 509 |
| Palisades, WA | 98845 | 509 |
| Rock Island, WA | 98850 | 509 |
| Waterville, WA | 98858 | 509 |
| Wenatchee, WA | 98802 | 509 |
| Withrow, WA | 98858 | 509 |