Waitsburg is a city in Walla Walla County, Washington, United States. The population was 1,217 at the 2010 census. Waitsburg has a unique city classification in the State of Washington. It is the only city which still operates under its territorial charter.
Waitsburg was first settled in 1859 by Robert Kennedy. The town name commemorates Sylvester M. Wait, who established a mill there in 1864.
Waitsburg was officially incorporated November 25, 1881.