| 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 |
|---|---|---|---|
| 509-956 | Walla Walla | Walla Walla, WA | Sprint Spectrum L.p. |
| 509-961 | Yakima | Yakima, WA | New Cingular Wireless PCS |
| 509-962 | Kittitas | Ellensburg, WA | Ellensburg Telephone Co. |
| 509-963 | Kittitas | Ellensburg, WA | Ellensburg Telephone Co. |
| 509-964 | Kittitas | Thorp, WA | Ellensburg Telephone Co. |
| 509-965 | Yakima | Yakima, WA | Qwest Corporation |
| 509-966 | Yakima | Yakima, WA | Qwest Corporation |
| 509-967 | Benton | Richland, WA | Frontier Communications Northwest Inc. |
| 509-968 | Kittitas | Ellensburg, WA | Ellensburg Telephone Co. |
| 509-969 | Yakima | Yakima, WA | New Cingular Wireless PCS |
| 509-972 | Yakima | Yakima, WA | Qwest Corporation |
| 509-973 | Benton | Prosser, WA | United Telephone-northwest-wa DBA Centurylink-wa |
| 509-977 | Lincoln | Creston, WA | Eastern Sub-rsa Limited Partnership |
| 509-978 | Okanogan | Coulee Dam, WA | Level 3 Communications |
| 509-979 | Spokane | Spokane, WA | New Cingular Wireless PCS |
| 509-980 | Adams | Washtucna, WA | Level 3 Communications |
| 509-981 | Spokane | Spokane, WA | New Cingular Wireless PCS |
| 509-982 | Lincoln | Odessa, WA | Centurytel Of Washington DBA Centurylink |
| 509-983 | Whitman | Hay, WA | Level 3 Communications |
| 509-984 | Spokane | Spokane, WA | Xo Washington |
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.