Walla Walla is the largest city and county seat of Walla Walla County, Washington, United States. It had a population of 31,731 at the 2010 census, estimated to have increased to 32,900 as of 2019. The population of the city and its two suburbs, the town of College Place and unincorporated Walla Walla East, is about 45,000.
Walla Walla is in the southeastern region of Washington, approximately four hours away from Portland, Oregon, and four and half hours from Seattle. It is located only 6 mi north of the Oregon border.