| | | Asotin County | WA | 53003 | | Lewiston, ID-WA 30300 | | Central | metro county (urban) | nonspecialized | https://maps.google.com/?q=AsotinCounty+WA |
| | | Benton County | WA | 53005 | | Kennewick-Richland, WA 28420 | Kennewick-Richland-Walla
Walla, WA 314 | Central | metro county (urban) | nonspecialized | https://maps.google.com/?q=BentonCounty+WA |
| | | Chelan County | WA | 53007 | | Wenatchee-East Wenatchee,
WA 48300 | | Central | metro county (urban) | recreation | https://maps.google.com/?q=ChelanCounty+WA |
| | | Clark County | WA | 53011 | | Portland-Vancouver-Hillsboro,
OR-WA 38900 | Portland-Vancouver-Salem,
OR-WA 440 | Central | metro county (urban) | nonspecialized | https://maps.google.com/?q=ClarkCounty+WA |
| | | Columbia County | WA | 53013 | | | | | metro county (urban) | farm-dependent | https://maps.google.com/?q=ColumbiaCounty+WA |
| | | Cowlitz County | WA | 53015 | | Longview-Kelso, WA 31020 | Portland-Vancouver-Salem,
OR-WA 440 | Central | metro county (urban) | nonspecialized | https://maps.google.com/?q=CowlitzCounty+WA |
| | | Douglas County | WA | 53017 | | Wenatchee-East Wenatchee,
WA 48300 | | Central | metro county (urban) | farm-dependent | https://maps.google.com/?q=DouglasCounty+WA |
| | | 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 |
| | | 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 |
