Montana - Area of significance: Exploration/Settlement
| Adams Hotel |
| Alice Creek Historic District |
| Baker and Lovering Store |
| Baker Hotel |
| Baker, I. G., House |
| Baldwin House |
| Bannack Historic District |
| Beaverhead Rock-Lewis and Clark Expedition |
| Benson, Dr. Theodore J., House |
| Benton Avenue Cemetery |
| Bethany Lutheran Church |
| Bielenberg, Nick J., House |
| Billings West Side School |
| B-K Ranch |
| Blewett, John, House |
| Bones Brothers Ranch |
| Bon Ton Historic District |
| Bottler, Frederick and Josephine, House |
| Brooder, Frank, House |
| Burgess Garage |
| Buttelman Ranch |
| Byam, Dr. Don L., House |
| Camp Disappointment |
| Carlton Community Church |
| Carnegie Public Library |
| Carriage House Historic District |
| Cheever-Cain Ranch |
| Chicken Creek Farmstead Historic District |
| Chivers Memorial Church |
| Chouteau County Courthouse |
| Clark's Lookout, August 13, 1805 |
| Comertown Historic District |
| Commercial District |
| Cooper Park Historic District |
| Crail Ranch Buildings |
| Crum, William C., House |
| Cuthbert, D. H., House |
| Daniels, Mansfield A., House |
| DeBorgia Schoolhouse |
| Drinkenberg's, F. H., First Home |
| East Main Street Residential Historic District |
| East Pine Street Historic District |
| East Side Historic District |
| Ebert Ranch |
| Erb, Abraham and Carrie, House |
| Ervin Homestead-Gist Bottom Historic District |
| Ferris-Hermsmeyer-Fenton |
| Finney House |
| Fire Hall |
| Fire House No. 2 |
| First United Methodist Church Parsonage |
| Fitzpatrick Ranch Historic District |
| Forestvale Cemetery |
| Forsyth Residential Historic District |
| Fort Assinniboine |
| Fort Benton Bridge |
| Fort Benton Engine House |
| Fort Shaw Historic District and Cemetery |
| Fromberg Methodist-Episcopal Church |
| Garfield School |
| Garnet Historic District |
| Gebo Barn |
| Gebo Cemetery |
| Glidden Mercantile |
| Goosetown Historic District |
| Grace Lutheran Church of Barber |
| Grant-Kohrs Ranch National Historic Site |
| Great Falls Northside Residential Historic District |
| Great Falls Portage |
| Great Falls Railroad Historic District |
| Great Northern Railway Depot |
| Greenblatt, Samuel, House |
| Green, Jesse R., Homestead |
| Green Ranch |
| Hagadone, Frank, Homestead |
| Halfway House |
| Hamilton Southside Residential Historic District |
| Harrison, Waborn (Wabe) and Sarah E., Ranch House |
| Harvat Ranch |
| Heatherington Boarding House |
| Hecla House |
| Helena South-Central Historic District |
| Helena West Main Street Historic District |
| Henneberry, William F., Homestead |
| Hi Bug Historic District |
| Hillcrest Cemetery |
| Hodgson House |
| Hogeland, Abraham and Mary Walton, House |
| Home of Peace |
| Hovda, Oliver H., House |
| Howard Lepper Memorial Hall |
| Howard School |
| IOOF Hall and Fromberg Co-operative Mercantile Building |
| Joliet Bridge |
| Joliet Residential Historic District |
| Judith Landing Historic District |
| Kalispell Main Street Historic District |
| Kemna, Herman, House |
| Kevin Depot |
| Kintla Lake Ranger Station |
Data from United States Park Service and Wikidata
