Area Codes
| 509 | Washington (All of eastern Washington, including Spokane, the Tri-Cities, Yakima, Wenatchee, Walla Walla, Pullman, and Ellensburg) | More information at: Area Code 509 Phone Number Blocks
| 509 | Washington (All of eastern Washington, including Spokane, the Tri-Cities, Yakima, Wenatchee, Walla Walla, Pullman, and Ellensburg) | More information at: Area Code 509 Phone Number Blocks