Washington - Area of significance: Exploration/Settlement
| 45DO1236 |
| 45DO1240 |
| 45DO1413 |
| 45DO1414 |
| 45DO1415 |
| 45DO1419 |
| Ashford House |
| Bank of Starbuck |
| Barron, J. C., Flour Mill |
| Baumeister, Max, Building |
| Bigelow, Daniel R., House |
| Bisson, William, House |
| Black Diamond Cemetery |
| Boatman-Ainsworth Hose |
| Borst, Joseph, House |
| Bothell Pioneer Cemetery |
| Buckeye Ranch House |
| Buckner Cabin |
| Buckner Homestead Historic District |
| Building at 1602 South G Street |
| Building at 712-716 Sixth Avenue |
| California Ranch |
| Carbonneau Mansion |
| Catlin, Adam, House |
| Central Whidbey Island Historic District |
| Chamber's Prairie-Ruddell Pioneer Cemetery |
| Chinook Point |
| Claquato Church |
| Cloverfields |
| Colbert House |
| Columbia River Quarantine Station |
| Colvin House |
| Courtney Cabin |
| Creaser Hotel |
| Dearborn, Henry H., House |
| Edgar Rock Lodge |
| Emmanuel Episcopal Church |
| Fairhaven Historic District |
| First Christian Church |
| Fort Nisqually Granary and Factor's House |
| Gagen-Sherlock House |
| Galster House |
| Glencove Hotel |
| Green, Albert and Letha, House and Barn |
| Grimm House |
| Haller, Colonel Granville & Henrietta, House |
| Hamilton-Worthington House |
| Ham-McEachern House |
| Hansen, Julia Butler, House |
| Heisen, Henry, House |
| Hillside Historic District |
| House at 1510 Tacoma Avenue South |
| House at 1610 South G Street |
| House at 2314 South Ainsworth Avenue |
| House at 2326 South L Street |
| House at 605 South G Street |
| House at 708-710 South 8th Street |
| House at 802-804 South G Street |
| House of Providence |
| Hudsons Bay Gristmill Site on Colville River |
| International Boundary US-Canada |
| Jackson, John R., House |
| Johnson House |
| Kamiakin's Gardens |
| Kestner Homestead |
| Krumdiack Homestead |
| Lake Washington Boulevard |
| Lewis and Clark Trail-Travois Road |
| Longmire Historic District |
| Lord, Richard Hinton, House |
| Lucas Homestead |
| Lutheran St. Paul's Kirche |
| Maloney's General Store |
| Mattoon Cabin |
| McIlvaine Apartments |
| Miller-Brewer House |
| Millwood Historic District |
| Neely, Sr., Aaron and Sarah, Farm |
| Nelson-Parker House |
| Newell, Charles, House |
| North Bonneville Archeological District |
| Northern Pacific Office Building |
| Oakland Block |
| Old Georgetown City Hall |
| Old-Man-House Site (45KP2) |
| Oysterville Historic District |
| Parkersville Site |
| Pickering Farm |
| Point No Point Light Station |
| Pomeroy Farm |
| Port Townsend Historic District |
| Rock Cabin |
| Roose, Peter, Homestead |
| Rosario |
| Roslyn Historic District |
| Ryan House |
| Saint's Rest, Tukey's Pioneer Cabin and Homestead House |
| Schultz Apartments |
| Shawnee House |
| Shobert, William Henry, House |
Data from United States Park Service and Wikidata
