Area code 509

North American area code 509 is the telephone area code for the eastern two-thirds of Washington. The western boundary of 509 roughly follows the Cascades. The 509 area includes: Spokane, the Tri-Cities (Richland, Pasco, and Kennewick), Ellensburg, Yakima, Walla Walla, and Wenatchee. The 509 code was created in a split from 206 in a flash-cut on January 1, 1957.

As eastern Washington is not nearly as densely populated as western Washington, 509 has remained unchanged for over half a century. The Washington Utilities and Transportation Commission forecasts that the supply of 509 numbers will not be exhausted until 2025.

Chewelah (509) - 935 937

Colfax (509)-397

Colville (509)-680 684

North Chelan County (509)-682 687 784

Cheney (509) -235 359 559

Pullman (509)-332 333 334 335 336 338 339 432 592 595 715 872

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