Idaho - Area of significance: Exploration/Settlement
| Aiken's Hotel |
| Assay Office |
| Baker, James V. and Sophia, House |
| Bayview School II |
| Beckman, Oscar and Christina, Farmstead |
| Bellgrove School II |
| Bown, Joseph, House |
| Braddock Gold Mining and Milling Company Log Building and Forge Ruins |
| Bridwell, James F., House |
| Bushnell-Fisher House |
| Cabin Creek Ranch |
| Caldron Linn |
| Campbell's Ferry |
| Cataldo Mission |
| Cave Lake School |
| Cedar Mountain School |
| Chase, Eben S. and Elizabeth S., House |
| Chesterfield Historic District |
| Chitwood, Joseph, House |
| City of Rocks |
| Cordelia Lutheran Church |
| Cougar Gulch School III |
| Crane, Silas W., and Elizabeth, House |
| Day, Ivan W., House |
| Dorman, Henry W. and Ida Frost, House |
| Dover Church |
| East Hayden Lake School II |
| Finch, John A., Caretaker's House |
| First Flag Unfurling Site, Lewis and Clark Trail |
| Fort Hall |
| Fox-Worswick House |
| Freeze Community Church |
| Galloway, Thomas C., House |
| Goodale's Cutoff |
| Hazelton Presbyterian Church |
| Hollingshead Homestead |
| Houlder, Ellen, Farm |
| Idaho City |
| Idaho State University Neighborhood Historic District |
| Independent Order of Odd Fellows Hall |
| Indian Springs School II |
| Just, Nels and Emma, House |
| Kelly's Hotel |
| Kirby, Thomas, House |
| Lake Pend Oreille Lime and Cement Industry Historic District |
| Lander Road |
| Lane School II |
| Lemhi Pass |
| Lieuallen, Almon Asbury, House |
| Lolo Trail |
| Long Valley Finnish Church |
| MacMillan Chapel |
| McGuires School |
| Meinert Ranch Cabin |
| New Sweden School |
| Nez Perce National Historical Park |
| Niece Brothers' Store |
| Noble Horse Barn |
| Oregon Trail |
| Orofino Historic District |
| Pen d'Oreille City |
| Pierre's Hole 1832 Battle Area Site |
| Placerville Historic District |
| Pleasant View School II |
| Pocatello Historic District |
| Post Falls Community United Presbyterian Church |
| Prairie School II |
| Ream, William and Nora, House |
| Register Rock |
| Rose Lake School II |
| Salmon Falls Dam |
| Salubria Lodge No. 31 |
| Samaria Historic District |
| Sandpoint Historic District |
| Schick-Ostolasa Farmstead |
| Sealander, Carl S. and Lizzie, Farmstead |
| Sherwood, Joseph, House and Store |
| Spaulding, Almon W. and Dr. Mary E., Ranch |
| St. Andrew's Episcopal Church |
| Stricker Store and Farm |
| Thunborg, Jacob and Cristina, House |
| Troy Hospital |
| Upper Twin Lakes School |
| Ustick School |
| Villeneuve, Charles and Martha, House |
| Watlington, Benjamin, House |
| Weippe Prairie |
| Weiser Oregon Short Line Railroad Depot |
Data from United States Park Service and Wikidata
