Founded in 1854, Wasco County is one of 36 counties in the state of Oregon. Historically, Wasco County was formed from parts of Clackamas, Lane, Linn and Marion counties. The city of The Dalles is the county seat. With FIPS code of 65, Wasco County has a population of 26,726 and area of 2,381 square miles (6,167 km2).
List of all cities in Wasco County, OR alphabetically
| City/Town | Postal Code | Area Code |
| Antelope, OR | 97001 | 541 |
| Celilo, OR | 97058 | 541 |
| Clarno, OR | 97001 | 541 |
| Dufur, OR | 97021 | 541 |
| Friend, OR | 97021 | 541 |
| Maupin, OR | 97037 | 541 |
| Mosier, OR | 97040 | 541 |
| Pine Grove, OR | 97037 | 541 |
| Rowena, OR | 97058 | 541 |
| Shaniko, OR | 97057 | 541 |
| The Dalles, OR | 97058 | 541 |
| Tygh Valley, OR | 97063 | 541 |
| Wamic, OR | 97063 | 541 |