| Adams | Asotin | Benton | Chelan | Clallam | Clark | Columbia | Cowlitz | Douglas | Ferry |
| Franklin | Garfield | Grant | Grays Harbor | Island | Jefferson | King | Kitsap | Kittatas | Klickitat |
| Lewis | Lincoln | Mason | Okanogan | Pacific | Pend Oreille | Pierce | San Juan | Skagit | Skamania |
| Snohomish | Spokane | Stevens | Thurston | Wahkiakum | Walla Walla | Whatcom | Whitman | Yakima | |
| County | County Seat | Postcards |
| Adams | Ritzville |
)
)
|
| Asotin | Asotin |
| Benton | Prosser |
) |
| Chelan | Wenatchee |
)
)
|
| Clallam | Port Angeles |
)
)
|
| Clark | Vancouver |
)
) |
| Columbia | Dayton |
) |
| Cowlitz | Kelso |
| Douglas | Waterville |
| Ferry | Republic |
| Franklin | Pasco |
)
|
| Garfield | Pomeroy |
) |
| Grant | Ephrata |
) |
| Grays Harbor | Montesano |
)
|
| Island | Coupeville |
)
|
| Jefferson | Port Townsend |
)
|
| King | Seattle |
)
) |
| Kitsap | Port Orchard |
)
|
| Kittitas | Ellensburg |
| Klickitat | Goldendale |
| Lewis | Chehalis |
| Lincoln | Davenport |
| Mason | Shelton |
| Okanogan | Okanogan |
| Pacific | South Bend |
)
)
|
| Pend Oreille | Newport |
| Pierce | Tacoma |
)
)
) |
| San Juan | Friday Harbor |
| Skagit | Mount Vernon |
| Skamania | Stevenson |
| Snohomish | Everett |
) |
| Spokane | Spokane |
)
) |
| Stevens | Colville |
)
) |
| Thurston | Olympia |
) |
| Wahkiakum | Cathlamet |
| Walla Walla | Walla Walla |
)
|
| Whatcom | Bellingham |
)
|
| Whitman | Colfax |
)
)
)
|
| Yakima | Yakima |
)
)
)
|
