Colorado - Area of significance: Commerce
| Stanley Hotel District |
| Star Filling Station |
| Steamboat Laundry Building |
| Steamboat Springs Downtown Historic District |
| St. Elmo Historic District |
| Stickney, Charles H., House |
| Stranges Grocery |
| Sugar Building |
| Summer Saloon |
| Tallmadge and Boyer Block |
| Telephone Building |
| The Bunk House Lodge |
| The Petroleum Club Building |
| Thomas, H. H., House |
| Townsend, Thomas B., House |
| Union Avenue Historic Commercial District |
| Union Depot |
| Union Warehouse |
| Vail Hotel |
| Victor Downtown Historic District |
| Victor Hotel |
| Vienna Bakery-Johnson Restaurant |
| Wallace Ruin |
| Walsenburg Mercantile |
| Webber, Henry, House-Pioneer Park |
| Webster Building |
| Western Hotel |
| Wheeler Bank |
| White, Asbury, House |
| White-Indian Contact Site |
| Winks Panorama |
| Zang, Adolph J., House |
| Zang, Adolph, Mansion |
| Zang’s Hotel and Annex |
| Zeitz Buckhorn Exchange |
Data from United States Park Service and Wikidata
