Colorado - Area of significance: Agriculture
| Anderson, Peter, House |
| Artesia Farm |
| Arvada Flour Mill |
| Baca Land Grant No. 4-Baca Ranch Rural Historic Landscape |
| Ball, Elmer and Etta, Ranch |
| Bear Canon Agricultural District |
| Beckwith Ranch |
| Bee Farm |
| Behrman Ranch |
| Bingham Homestead Rural Historic Landscape |
| Boggsville |
| Boulder County Poor Farm |
| Bromley Farm-Koizuma Hishinuma Farm |
| Brush, Jared L., Barn |
| Buckley Ranch |
| Butler House |
| Cannonball Ruins |
| Chambers Ranch |
| Chasteen's Grove |
| Cherokee Ranch |
| Chew, Rial, Ranch Complex |
| Churches Ranch |
| Colorado Salt Works |
| Cross Land and Fruit Company Orchards and Ranch |
| Dawson-Carpenter Ranch |
| Dearfield |
| DeLaney Barn |
| Denver Elevator-Grain Elevator |
| Downtown Boulder Historic District |
| Doyle-Benton House |
| Doyle Settlement |
| Earnest Ranch |
| Edgemont |
| El Pueblo |
| Empson Cannery |
| EM Ranch |
| Evans Homestead Rural Historic Landscape |
| Evergreen Corner Rural Historic District |
| Everhardt Ranch |
| Garcia-Espinosa-Garland Ranch Headquarters |
| Glassier Farmstead |
| Goodnight Barn |
| Grand Valley Diversion Dam |
| Graves Camp Rural Historic District |
| Green Mountain Ranch |
| Guiraud-McDowell Ranch |
| Gunnison Tunnel |
| Hargreaves Homestead Rural Historic District |
| Harmony Mill |
| Harms Farm |
| Harris, W. C., House |
| Havemeyer-Willcox Canal Pumphouse and Forebay |
| Hayden Ranch Headquarters |
| Henry Huff Cabin |
| Hildebrande Ranch |
| Hollemon-Smith Homestead and Ranch |
| Holly SS Ranch Barn |
| Holzwarth Historic District |
| Hopkins Farm |
| Hotchkiss Homestead |
| Hoverhome and Hover Farmstead |
| Hutchinson Ranch |
| Indian Camp Ranch Archeological District |
| Johnson Stage Station |
| Kimsey-Bolten Ranch Rural Historic Landscape |
| Kinner, John, House |
| Lost Trail Station |
| MacGregor Ranch |
| Manitou Experimental Forest Station |
| Maxwell, R. G., House |
| McFadden Brothers Ranch East Headquarters |
| McGraw Ranch |
| McHugh-Andrews House |
| McIntire Ranch |
| Medano Ranch Headquarters |
| Metzger Farm |
| Millage Farm Rural Historic District |
| Milne Farm |
| Mitchell Springs Archeological Site |
| Montoya Ranch |
| Nachtrieb-Kelly Ranch |
| Old Town Fort Collins |
| Oltjenbruns Farm |
| Paulsen Farm |
| Powell and Blair Stone Ranch |
| Preston Farm |
| Provost Homestead-Herring Farm Rural Historic Landscape |
| Quick, Ben, Ranch and Fort |
| Richards Mansion |
| Rock Creek Farm Rural Historic District |
| Rock Ledge Ranch-Franzel Ranch |
| Rooney Ranch |
| Rourke Ranch Historic District |
| Saguache Flour Mill |
| Salida Livestock Commission Company |
| Salt Works Ranch |
| Sand Canyon Archaeological District |
| Sandstone Ranch |
| Schnell Farm |
| Seven Towers Pueblo |
Data from United States Park Service and Wikidata
