Walla Walla, Washington
Area code 509 · Population: 31,731
Pacific (PT)
Washington
Pop. 31,731
Area Codes Serving Walla Walla
About Walla Walla, Washington
Walla Walla is a city in Washington that is served by area code 509. The city has a population of approximately 31,731 residents and is located in the Pacific Time Zone.