| Museum | Location | County |
|---|
| Aberdeen Museum of History | Aberdeen | Grays Harbor |
| Admiralty Head Lighthouse | Coupeville | Island |
| Alaska Packers Association Cannery Museum | Blaine | Whatcom |
| Alder Creek Pioneer Carousel Museum | Bickleton | Klickitat |
| Alpowai Interpretive Center | Clarkston | Asotin |
| America's Car Museum | Tacoma | Pierce |
| American Hop Museum | Toppenish | Yakima |
| Anacortes History Museum | Anacortes | Skagit |
| Anacortes Maritime Heritage Center | Anacortes | Skagit |
| Ansorge Hotel | Curlew | Ferry |
| Antique Car & Truck Museum | Curlew | Ferry |
| Asotin County Museum | Asotin | Asotin |
| Aurora Valentinetti Puppet Museum | Bremerton | Kitsap |
| Bainbridge Island Historical Society Museum | Bainbridge Island | Kitsap |
| Bellevue Arts Museum | Bellevue | King |
| Bellingham Maritime Museum | Bellingham | Whatcom |
| Bellingham Railway Museum | Bellingham | Whatcom |
| Benton County Historical Museum | Prosser | Benton |
| Big Bend Historical Society Museum | Wilbur | Lincoln |
| Bigelow House Museum | Olympia | Thurston |
| Bing Crosby Museum | Spokane | Spokane |
| Black Diamond Museum | Black Diamond | King |
| Blackman House Museum | Snohomish | Snohomish |
| Boldman House Museum | Dayton | Columbia |
| Bothell Historical Museum | Bothell | King |
| Breazeale Interpretive Center | Anacortes | Skagit |
| Browns Point Lighthouse Park | Browns Point | Pierce |
| Bruce Memorial Museum | Waitsburg | Walla Walla |
| Camlann Medieval Village | Carnation | King |
| Carpenter House Museum | Cle Elum | Kittitas |
| Cashmere Museum and Pioneer Village | Cashmere | Chelan |
| Cedar Creek Grist Mill | Woodland | Clark |
| Central Washington Agricultural Museum | Union Gap | Yakima |
| Charles R. Conner Museum | Pullman | Whitman |
| Chehalis-Centralia Railroad | Chehalis | Lewis |
| Chelan Museum | Chelan | Chelan |
| Cheney Historical Museum | Cheney | Spokane |
| Chewelah Museum | Chewelah | Stevens |
| Children's Museum of Skagit County | Burlington | Skagit |
| Children's Museum of Tacoma | Tacoma | Pierce |
| Children's Museum of Walla Walla | Walla Walla | Walla Walla |
| Clark County Historical Museum | Vancouver | Clark |
| Clymer Museum | Ellensburg | Kittitas |
| Coastal Interpretive Center | Ocean Shores | Grays Harbor |
| Colbert House Museum | Ilwaco | Pacific |
| Columbia Pacific Heritage Museum | Ilwaco | Pacific |
| Colville Tribal Museum | Coulee Dam | Douglas |
| Commanding Officer's Quarters | Port Townsend | Jefferson |
| Conconully Museum | Conconully | Okanogan |
| Concrete Heritage Museum | Concrete | Skagit |
| Corbin Art Center | Spokane | Spokane |
| Cougar Mountain Zoo | Issaquah | King |
| Cowlitz County Historical Museum | Kelso | Cowlitz |
| Crosby House | Tumwater | Thurston |
| CWU Museum of Culture & Environment | Ellensburg | Kittitas |
| D. O. Pearson House Museum | Stanwood | Snohomish |
| Dayton Historic Depot | Dayton | Columbia |
| Discovery Village | Gig Harbor | Pierce |
| DuPont Museum | DuPont | Pierce |
| East Benton County Historical Museum | Kennewick | Benton |
| Eastside Heritage Center | Bellevue | King |
| Edmonds Historical Museum | Edmonds | Snohomish |
| Ferndale Pioneer Park | Ferndale | Whatcom |
| Ferry County Historical Center | Republic | Ferry |
| Flying Heritage Collection | Everett | Snohomish |
| Foothills Historical Society & Museum | Buckley | Pierce |
| Forest Learning Center | Mount St. Helens National Volcanic Monument | Cowlitz |
| Forks Timber Museum | Forks | Clallam |
| Fort Columbia State Park | Chinook | Pacific |
| Fort Flagler State Park | Marrowstone | Jefferson |
| Fort Nisqually Living History Museum | Tacoma | Pierce |
| Fort Okanogan Interpretive Center | Brewster | Okanogan |
| Fort Simcoe State Park | White Swan | Yakima |
| Fort Spokane Museum and Visitor Center | Davenport | Lincoln |
| Fort Steilacoom | Steilacoom | Pierce |
| Fort Vancouver National Historic Site | Vancouver | Clark |
| Fort Walla Walla Museum | Walla Walla | Walla Walla |
| Fox Island Museum | Fox Island | Pierce |
| Frank R. Burroughs Home Museum | Ritzville | Adams |
| Franklin County Historical Museum | Pasco | Franklin |
| Furford Cranberry Picker Museum | Grayland | Grays Harbor |
| Future of Flight Aviation Center & Boeing Tour | Mukilteo | Snohomish |
| Garfield County Museum | Pomeroy | Garfield |
| Gilman Town Hall Museum | Issaquah | King |
| Ginkgo Petrified Forest State Park | Vantage | Kittitas |
| Gorge Heritage Museum | Bingen | Klickitat |
| Granite Falls Historical Museum | Granite Falls | Snohomish |
| Grant County Historic Museum and Village | Ephrata | Grant |
| Hands On Children's Museum | Olympia | Thurston |
| Hanford Reach Interpretive Center | Richland | Benton |
| Harbor History Museum | Gig Harbor | Pierce |
| Heritage Flight Museum | Burlington | Skagit |
| Heritage Park | Lynnwood | Snohomish |
| Hunters Museum | Hunters | Stevens |
| Hydroplane & Raceboat Museum | Kent | King |
| Imagine Children's Museum | Everett | Snohomish |
| Island County Historical Society Museum | Whidbey Island | Island |
| Issaquah Depot Museum | Issaquah | King |
| Jansen Art Center | Lynden | Whatcom |
| Jefferson Museum of Art & History | Port Townsend | Jefferson |
| Job Carr Cabin Museum | Tacoma | Pierce |
| Johnson Farm Museum | Anderson Island | Pierce |
| Jundt Art Museum | Spokane | Spokane |
| Karpeles Manuscript Library Museum | Tacoma | Pierce |
| Karshner Museum | Puyallup | Pierce |
| Keller Heritage Center Museum and Park | Colville | Stevens |
| Kettle Falls Historical Center | Kettle Falls | Stevens |
| Kids Discovery Museum | Bainbridge Island | Kitsap |
| KidsQuest Children's Museum | Bellevue | King |
| Kirkman House Museum | Walla Walla | Walla Walla |
| Kitsap County Historical Society Museum | Bremerton | Kitsap |
| Kittitas County Historical Museum | Ellensburg | Kittitas |
| Kittredge Gallery | Tacoma | Pierce |
| La Conner Quilt & Textile Museum | La Conner | Skagit |
| Lake Stevens Museum | Lake Stevens | Snohomish |
| Larson Gallery | Yakima | Yakima |
| Leavenworth Nutcracker Museum | Leavenworth | Chelan |
| Lelooska Museum | Ariel | Cowlitz |
| Lewis and Clark Interpretive Center | Ilwaco | Pacific |
| Lewis Army Museum | Fort Lewis | Pierce |
| Lewis County Historical Museum | Chehalis | Lewis |
| Lincoln County Museum | Davenport | Lincoln |
| Log Cabin Museum | Port Orchard | Kitsap |
| Longmire Museum | Longmire | Pierce |
| Loon Lake Museum | Loon Lake | Stevens |
| Lopez Island Historical Society Museum | Lopez Island | San Juan |
| Lower Columbia College Art Gallery | Longview | Cowlitz |
| Lynden Pioneer Museum | Lynden | Whatcom |
| Makah Museum | Neah Bay | Clallam |
| Martinson Cabin | Poulsbo | Kitsap |
| Maryhill Museum of Art | Goldendale | Klickitat |
| McAllister Museum of Aviation | Yakima | Yakima |
| McChord Air Museum | McChord Air Force Base | Pierce |
| Meeker Mansion | Puyallup | Pierce |
| Mobius Kids | Spokane | Spokane |
| Mobius Science Center | Spokane | Spokane |
| Molson School Museum | Molson | Okanogan |
| Monarch Contemporary Art Center and Sculpture Park | Olympia | Thurston |
| Monroe Historical Museum | Monroe | Snohomish |
| Moses Lake Museum and Art Center | Moses Lake | Grant |
| Mount St Helens Creation Center | Silverlake | Cowlitz |
| Mount St. Helens - Johnston Ridge Observatory | Toutle | Cowlitz |
| Mount St. Helens Visitor Center at Silver Lake | Silverlake | Cowlitz |
| Mukilteo Light | Mukilteo | Snohomish |
| Museum & Arts Center in the Sequim-Dungeness Valley | Sequim | Clallam |
| Museum at the Carnegie | Port Angeles | Clallam |
| Museum of Flight | Tukwila | King |
| Museum of Glass | Tacoma | Pierce |
| Museum of Northwest Art | La Conner | Skagit |
| Museum of the Columbia | Rocky Reach Dam | Chelan |
| Museum of the North Beach | Moclips | Grays Harbor |
| Naval Undersea Museum | Keyport | Kitsap |
| New Dungeness Lighthouse | Sequim | Clallam |
| North Clark Historical Museum | Amboy | Clark |
| North Spokane Farm Museum | Deer Park | Spokane |
| Northern Pacific Railway Museum | Toppenish | Yakima |
| Northwest Carriage Museum | Raymond | Pacific |
| Northwest Museum of Arts and Culture | Spokane | Spokane |
| Northwest Railway Museum | Snoqualmie | King |
| Of Sea & Shore Museum | Port Gamble | Kitsap |
| Okanogan County Historical Museum | Okanogan | Okanogan |
| Old Molson Museum | Molson | Okanogan |
| Olmstead Place State Park | Ellensburg | Kittitas |
| Olympic Flight Museum | Olympia | Thurston |
| Orcas Island Historical Museum | Eastsound | San Juan |
| Oroville Train Depot Museum | Oroville | Okanogan |
| Pacific Coast Cranberry Research Foundation Museum | Long Beach | Pacific |
| Pacific County Museum | South Bend | Pacific |
| Palouse Discovery Science Center | Pullman | Whitman |
| Palus Artifact Museum | Dayton | Columbia |
| Pearson Air Museum | Vancouver | Clark |
| Pend Oreille County Museum | Newport | Pend Oreille |
| Perkins House | Colfax | Whitman |
| Pioneer Farm Museum & Ohop Indian Village | Eatonville | Pierce |
| Point No Point Lighthouse | Hansville | Kitsap |
| Polson Museum | Grays Harbor | Grays Harbor |
| Pomeroy Living History Farm | Yacolt | Clark |
| Port Angeles Fine Arts Center | Port Angeles | Clallam |
| Port Gamble Historic Museum | Port Gamble | Kitsap |
| Port Townsend Aero Museum | Port Townsend | Jefferson |
| Port Townsend Marine Science Center | Port Townsend | Jefferson |
| Poulsbo Historical Society Museum | Poulsbo | Kitsap |
| Poulsbo Marine Science Center | Poulsbo | Kitsap |
| Puget Sound Coast Artillery Museum | Port Townsend | Jefferson |
| Puget Sound Navy Museum | Bremerton | Kitsap |
| Quilcene Historical Museum | Quilcene | Jefferson |
| Renton History Museum | Renton | King |
| Ritzville Railroad Depot Museum | Ritzville | Adams |
| Robert P Worthman Anatomy Museum | Pullman | Whitman |
| Roslyn Museum | Roslyn | Kittitas |
| Rothschild House | Port Townsend | Jefferson |
| Roy M. Chatters Newspaper and Printing Museum | Palouse | Whitman |
| Ryan House Museum | Sumner | Pierce |
| Sacajawea Interpretive Center | Pasco | Franklin |
| San Juan Historical Museum | Friday Harbor | San Juan |
| San Juan Island National Historical Park | Friday Harbor | San Juan |
| San Juan Islands Museum of Art | Friday Harbor | San Juan |
| Sand Man Tugboat | Olympia | Thurston |
| Sarah Spurgeon Gallery | Ellensburg | Kittitas |
| Scandinavian Cultural Center | Tacoma | Pierce |
| Sedro-Woolley Museum | Sedro-Woolley | Skagit |
| Shafer Museum | Winthrop | Okanogan |
| Shanaman Sports Museum | Tacoma | Pierce |
| Shoreline Historical Museum | Shoreline | King |
| Sidney Museum | Port Orchard | Kitsap |
| Skagit County Historical Museum | La Conner | Skagit |
| Slater Museum of Natural History | Tacoma | Pierce |
| Snoqualmie Valley Historical Museum | North Bend | King |
| South Cle Elum Depot | Cle Elum | Kittitas |
| SPARK Museum of Electrical Invention | Bellingham | Whatcom |
| Spokane House Interpretive Center | Nine Mile Falls | Spokane |
| Spokane Valley Heritage Museum | Spokane Valley | Spokane |
| Squaxin Island Tribe Museum Library and Research Center | Squaxin Island | Mason |
| Stanwood Area History Museum | Stanwood | Snohomish |
| State Capital Museum | Olympia | Thurston |
| Steilacoom Tribal Cultural Center & Museum | Steilacoom | Pierce |
| Stillaguamish Valley Pioneer Museum | Arlington | Snohomish |
| Stonerose Interpretive Center and Fossil Site | Republic | Ferry |
| Sunnyside Historical Museum | Sunnyside | Yakima |
| Suquamish Museum | Suquamish | Kitsap |
| Tacoma Art Museum | Tacoma | Pierce |
| Tacoma History Museum | Tacoma | Pierce |
| Tacoma Pioneer Telephone Museum | Tacoma | Pierce |
| Telephone Museum | Cle Elum | Kittitas |
| Tenino Depot Museum | Tenino | Thurston |
| Thorp Mill | Thorp | Kittitas |
| Two Rivers Heritage Museum | Washougal | Clark |
| USS Turner Joy Museum Ship | Bremerton | Kitsap |
| Verlot Ranger Station-Public Service Center | Granite Falls | Snohomish |
| Veterans Memorial Museum | Chehalis | Lewis |
| Vintage Motorcycle Museum | Chehalis | Lewis |
| Wahkiakum County Historical Society Museum | Cathlamet | Wahkiakum |
| Wanapum Heritage Center | Wanapum Dam | Grant |
| Washington National Guard Museum | Camp Murray | Pierce |
| Washington State History Museum | Tacoma | Pierce |
| Washington State University Geology Museums | Pullman | Whitman |
| Washington State University Museum of Anthropology | Pullman | Whitman |
| Washington State University Museum of Art | Pullman | Whitman |
| West Coast Clock & Watch Museum | Bellingham | Whatcom |
| Westport Maritime Museum | Westport | Grays Harbor |
| Wenatchee Valley Museum & Cultural Center | Wenatchee | Chelan |
| Western Gallery | Bellingham | Whatcom |
| Whale Museum | Friday Harbor | San Juan |
| Whatcom Museum | Bellingham | Whatcom |
| White Bluffs Quilt Museum | Richland | Benton |
| White River Valley Museum | Auburn | King |
| White Pass Country Historical Museum | Packwood | Lewis |
| Whitman Mission National Historic Site | Walla Walla | Walla Walla |
| Whoop-n-Holler Museum | Bickleton | Klickitat |
| Willapa Bay Oyster House Interpretive Center | Nahcotta | Pacific |
| Willapa Seaport Museum | Raymond | Pacific |
| Working Waterfront Maritime Museum | Tacoma | Pierce |
| World Kite Museum | Long Beach | Pacific |
| Yakama Nation Museum | Toppenish | Yakima |
| Yakima Electric Railway Museum | Yakima | Yakima |
| Yakima Valley Museum | Yakima | Yakima |
