Washington - Area of significance: Politics/Government
| Adams County Courthouse |
| Adjutant General's Residence |
| Altair Campground Community Kitchen |
| Atlas E Missile Site 9 |
| Auburn Post Office |
| Axtell, Dr. William H. and Frances C., House |
| Badger Mountain Lookout |
| Ballard Avenue Historic District |
| Ballinger, Richard A., House |
| Bassett Hardware Co. Store |
| Bell Hotel |
| Bellingham City Hall |
| Benton County Courthouse |
| Bishop, Senator William, House and Office |
| Boundary Marker No. 1 |
| Butler-Jackson House |
| Camp Muir |
| Canton, William J., House |
| Canyon Creek Shelter |
| Central Whidbey Island Historic District |
| Chatter Creek Guard Station |
| Chelan Butte Lookout |
| Chinook Pass Entrance Arch |
| Chittenden Locks and Lake Washington Ship Canal |
| Christine Falls Bridge |
| Clallam County Courthouse |
| Clark County Courthouse |
| Columbia Basin Project Irrigation Division Headquarters Office |
| Columbia County Courthouse |
| Courthouse and Federal Office Building |
| Covington Electrical Substation, Bonneville Power Administration |
| Dacres Hotel |
| Darrington Ranger Station |
| Deception Pass State Park-Cornet Bay Fire Circle |
| Deception Pass State Park-Cornet Bay Incinerator |
| Deception Pass State Park-Cranberry Lake Bathing and Picnic Area Historic District |
| Deception Pass State Park-Cranberry Lake Caretaker's Area Historic District |
| Deception Pass State Park-North Beach Picnic Area Historic District |
| Deception Pass State Park-Rosario and Bowman Bathing, Picnic, and Caretaker's Areas Historic District |
| Dodger Point Fire Lookout |
| Douglas County Courthouse |
| Downtown Bellingham Historic District |
| Downtown Dayton Historic District |
| Downtown Pomeroy Historic District |
| Drum, Henry, House |
| DUWAMISH |
| Eagle Ranger Station |
| Early Winters Ranger Station Work Center |
| Edith Creek Chlorination House |
| Elkhorn Guard Station |
| Elwah Campground Community Kitchen |
| Elwha Ranger Station |
| Engine House No. 11 |
| Engine House No. 13 |
| Engine House No. 4 |
| Engine House No. 8 |
| Everett City Hall |
| Everett Fire Station No. 2 |
| Evergreen Mountain Lookout |
| Fairhaven Historic District |
| Ferry County Courthouse |
| Fifteen Mile Shelter |
| Fire Alarm Station |
| FIREBOAT NO.1 |
| Fireboat Station |
| Fire Station No. 1 |
| Fire Station No. 10 |
| Fire Station No. 14 |
| Fire Station No. 15 |
| Fire Station No. 2 |
| Fire Station No. 5 |
| Fort Nisqually Site |
| Fort Spokane Military Reserve |
| Fort Vancouver National Historic Site |
| Franklin County Courthouse |
| Garfield County Courthouse |
| General Administration Building |
| Gobbler's Knob Fire Lookout |
| Grant County Courthouse |
| Graves Creek Ranger Station |
| Green Mountain Lookout |
| Guernsey-Sturdevant Building |
| Hale, Calvin and Pamela, House |
| Hallett House |
| Ham-McEachern House |
| Hanford B Reactor |
| Hansen, Julia Butler, House |
| Happy Four Shelter |
| Hartley, Roland, House |
| Hayes River Fire Cache |
| Hidden Lake Peak Lookout |
| High Bridge Ranger Station Historic District |
| Hoquiam Olympic Stadium |
| Huckleberry Creek Patrol Cabin |
| Hutton Building |
| Hutton, Levi and May Arkwright, House |
| Hyak Shelter |
| Indian Bar Trail Shelter |
| Indian Henry's Patrol Cabin |
| Interrorem Guard Station-Olympic National Forest |
Data from United States Park Service and Wikidata
