| | | Franklin County | WA | 53021 | | Kennewick-Richland, WA 28420 | Kennewick-Richland-Walla
Walla, WA 314 | Central | metro county (urban) | nonspecialized | https://maps.google.com/?q=FranklinCounty+WA |
| | | Garfield County | WA | 53023 | | | | | nonmetro county (rural) | federal/state
government-dependent | https://maps.google.com/?q=GarfieldCounty+WA |
| | | Grant County | WA | 53025 | | Moses Lake, WA 34180 | Moses Lake-Othello, WA 393 | Central | nonmetro county (rural) | farm-dependent | https://maps.google.com/?q=GrantCounty+WA |
| | | Grays Harbor County | WA | 53027 | | Aberdeen, WA 10140 | | Central | nonmetro county (rural) | nonspecialized | https://maps.google.com/?q=GraysHarborCounty+WA |
| | | Island County | WA | 53029 | | Oak Harbor, WA 36020 | Seattle-Tacoma, WA 500 | Central | nonmetro county (rural) | recreation | https://maps.google.com/?q=IslandCounty+WA |
| | | Jefferson County | WA | 53031 | | Port Townsend, WA 39040 | | Central | nonmetro county (rural) | recreation | https://maps.google.com/?q=JeffersonCounty+WA |
| | | King County | WA | 53033 | Seattle-Bellevue-Kent, WA 42644 | Seattle-Tacoma-Bellevue,
WA 42660 | Seattle-Tacoma, WA 500 | Central | metro county (urban) | nonspecialized | https://maps.google.com/?q=KingCounty+WA |
| | | Kitsap County | WA | 53035 | | Bremerton-Silverdale-Port
Orchard, WA 14740 | Seattle-Tacoma, WA 500 | Central | metro county (urban) | federal/state
government-dependent | https://maps.google.com/?q=KitsapCounty+WA |
| | | Kittitas County | WA | 53037 | | Ellensburg, WA 21260 | | Central | nonmetro county (rural) | federal/state
government-dependent | https://maps.google.com/?q=KittitasCounty+WA |
| | | Klickitat County | WA | 53039 | | | | | nonmetro county (rural) | nonspecialized | https://maps.google.com/?q=KlickitatCounty+WA |
