Founded in 1854, Walla Walla County is one of 39 counties in the state of Washington. Historically, Walla Walla County was formed from Skamania County. The city of Walla Walla is the county seat. With FIPS code of 71, Walla Walla County has a population of 62,584 and area of 1,270 square miles (3,289 km2).
List of all cities in Walla Walla County, WA alphabetically
| City/Town | Postal Code | Area Code |
| Burbank, WA | 99323 | 509 |
| College Place, WA | 99324 | 509 |
| Dixie, WA | 99329 | 509 |
| Lowden, WA | 99360 | 509 |
| Prescott, WA | 99348 | 509 |
| Touchet, WA | 99360 | 509 |
| Waitsburg, WA | 99361 | 509 |
| Walla Walla, WA | 99362 | 509 |
| Wallula, WA | 99363 | 509 |