Minnesota - Area of significance: Architecture
| St. James Hotel |
| St. John's Abbey and University Historic District |
| St. John's Lutheran Church |
| St. John the Divine Episcopal Church |
| St. Joseph's Academy |
| St. Joseph's Church-Catholic |
| St. Louis County 4-H Club Camp |
| St.Louis County District Courthouse |
| St. Mark's Episcopal Chapel |
| St. Mary's Church of the Purification-Catholic |
| St. Mary's Hall |
| St. Matthew's School |
| St. Michael's School and Convent |
| Stockyards Exchange |
| Stoppel, George, Farmstead |
| Stordahl Building |
| Stout, James C. and Agnes M., House |
| St. Paul Casket Company |
| St. Paul Cathedral-Catholic |
| St. Paul City Hall and Ramsey County Courthouse |
| St. Paul, Minneapolis, & Manitoba Railway Company Shops Historic District |
| St. Paul Public/James J. Hill Reference Library |
| St. Paul Union Depot |
| St. Paul Women's City Club |
| St. Peter Armory |
| St. Peter Central School |
| Strong, William, House |
| Strong, William, House |
| Strunk-Nyssen House |
| Stuntz Bay Boathouse Historic District |
| Stussi, Henry, House |
| Superior Packing Company Plant |
| Supervisor's Office Headquarters |
| Svenska Mission Kyrka i Sodre Maple Ridge |
| Swedish Evangelical Lutheran Church |
| Swensson, Olof, Farmstead |
| Swift County Courthouse |
| Swinford Townhouses and Apartments |
| Tanner's Hospital |
| Taylor, George W., House |
| Taylors Falls Public Library |
| Tettegouche Camp Historic District |
| Thief River Falls Auditorium and Municipal Building |
| Thief River Falls Public Library |
| Thoirs, Alexander, House |
| Thompson, Charles, Memorial Hall |
| Thompson-Fasbender House |
| Thompson, Hannah C. and Peter E., House |
| Thompson Summer House |
| Ticknor, Heman L., House |
| Tinnes-Baker House |
| Todd County Courthouse, Sheriff's House and Jail |
| Tonn, August, Farmstead |
| Toogood Barns |
| Towne-Akenson House |
| Traphagen, Oliver G., House |
| Trinity Chapel-Episcopal |
| Trinity Episcopal Church |
| Trinity Episcopal Church |
| Trinity Episcopal Church |
| Trinity Lutheran Church |
| Triune Masonic Temple |
| Troendle, Lucas, House |
| Turnblad, Swan, House |
| Two Harbors Carnegie Library |
| Tyler Public School |
| Union Presbyterian Church |
| United Church Seminary |
| United Protestant Church |
| United States Post Office |
| United States Post Office and Courthouse |
| University Hall-Old Main, Hamline University |
| University of Minnesota Old Campus Historic District |
| Upper Sioux Agency |
| US Fisheries Station, Duluth |
| U.S. Post Office-Alexandria |
| Uytendale, Christian F., Farmstead |
| Valley Grove |
| Van Cleve, Horatio P., House |
| Van Dusen, George W. and Nancy B., House |
| VanDyke-Libby House |
| Vasa Historic District |
| Vienna and Earl Apartment Buildings |
| Virginia Brewery |
| Voss, Alfred R., Farmstead |
| Waconia City Hall |
| Walker and Valentine House |
| Wallauer, Fred, Farmhouse |
| Walsh Building |
| Ward, Noah P., House |
| Ward, Roscoe P., House |
| Warren, William, Two Rivers House Site and McDougall, Peter, Farmstead |
| Waseca County Courthouse |
| Washburn-Fair Oaks Mansion District |
| Washburn Park Water Tower |
| Washington County Courthouse |
| Wasioja Historic District |
| Watkins, J. R., Medical Company Complex |
| Watkins, Paul, House |
| Watonwan County Courthouse |
Data from United States Park Service and Wikidata
