| District of Washington area codes: 509 | |
|---|---|
| Country | United States |
| State/Province | Washington |
| Major City | Spokane |
| Time Zone | Pacific (UTC-08:00) |
| Prefix | County | Primary City | Company |
|---|---|---|---|
| 509-289 | Grant | Ephrata, WA | Sprint Spectrum L.p. |
| 509-290 | Spokane | Spokane, WA | New Cingular Wireless PCS |
| 509-291 | Spokane | Rockford, WA | Frontier Communications Northwest Inc. |
| 509-292 | Spokane | Elk, WA | Qwest Corporation |
| 509-293 | Chelan | Wenatchee, WA | Level 3 Communications |
| 509-294 | Benton | Kennewick, WA | Sprint Spectrum L.p. |
| 509-295 | Asotin | Clarkston, WA | Xo Washington |
| 509-297 | Franklin | Eltopia, WA | Centurytel Of Washington DBA Centurylink |
| 509-299 | Spokane | Medical Lake, WA | Centurytel Of Washington DBA Centurylink |
| 509-301 | Walla Walla | Walla Walla, WA | Sprint Spectrum L.p. |
| 509-302 | Franklin | Pasco, WA | Sprint Spectrum L.p. |
| 509-303 | Benton | Prosser, WA | Sprint Spectrum L.p. |
| 509-304 | Kittitas | Cle Elum, WA | Sprint Spectrum L.p. |
| 509-305 | Yakima | Sunnyside, WA | Sprint Spectrum L.p. |
| 509-306 | Kittitas | Ellensburg, WA | Sprint Spectrum L.p. |
| 509-307 | Yakima | Yakima, WA | Sprint Spectrum L.p. |
| 509-308 | Benton | Kennewick, WA | Sprint Spectrum L.p. |
| 509-309 | Spokane | Spokane, WA | Onvoy |
| 509-310 | Klickitat | White Salmon, WA | Sprint Spectrum L.p. |
| 509-312 | Kittitas | Ellensburg, WA | T-mobile Usa |
There are 634 prefixes, In the code area, the major cities are Kennewick, WA;Opportunity, WA;Pasco, WA;Pullman, W. The major city is Spokane.