Idaho - Significance region: National
| Anchustegui, Pedro, Pelota Court |
| Artesian Water Co. Pumphouse and Wells |
| Assay Office |
| Atlanta Dam and Power Plant |
| Birch Creek Rock Shelters |
| Bullion Tunnel |
| Camas Meadow Camp and Battle Sites |
| Cataldo Mission |
| City of Rocks |
| Elfers, Jurden Henry, Barn and Field |
| Experimental Breeder Reactor No. 1 |
| First Flag Unfurling Site, Lewis and Clark Trail |
| Fort Boise and Riverside Ferry Sites |
| Fort Hall |
| Guffey Butte-Black Butte Archeological District |
| Hatwai Village Site |
| Hemingway, Ernest and Mary, House |
| Lemhi Pass |
| Lenore Site |
| Lolo Trail |
| Map Rock Petroglyphs Historic District |
| Milner Dam and the Twin Falls Main Canal |
| Minidoka Internment National Monument |
| Mullan Road |
| Nez Perce National Historical Park |
| Oregon Trail Historic District |
| Pound, Homer, House |
| Priest River Experimental Forest |
| Proctor Mountain Ski Lift |
| Pulaski, Edward, Tunnel and Placer Creek Escape Route |
| St. Joseph's Mission |
| Tolo Lake |
| U.S. Inspection Statio-Porthill, Idaho |
| Wasden Site (Owl Cave) |
| Weippe Prairie |
| White Bird Battlefield |
| Wilson Butte Cave |
Data from United States Park Service and Wikidata
