South Dakota - Role: Building
| Sitting Bull Crystal Cavern Dance Pavilion |
| Skartvedt House |
| Slettebak Grocercies, Hardware and Opera House |
| Sloan, John, Homestead |
| Small, Charles and Eleanor, House |
| Smith, Jessie, Farmstead |
| Smith, William P., House |
| Snyder, L. E., House |
| Soldiers & Sailors World War Memorial |
| Sorum Cooperative Store |
| Sorum Hotel |
| South Dakota School for the Deaf |
| South Dakota State Capitol |
| South Dakota State Penitentiary Historic Buildings |
| South Dakota Stockgrowers Association Building |
| Southeast Merton School No. 19 |
| South Side Fire Station No. 3 |
| Spearfish City Hall |
| Spearfish Filling Station |
| Spearfish Post Office (Old) |
| Spink County Courthouse |
| Spring Creek School |
| Springer, R. D. and Mary, House |
| Stadum-Green House |
| St. Agnes Catholic Church |
| St. Agnes Church |
| St. Andrew's Episcopal Church |
| St. Ann's Catholic Church of Badus |
| Stark and Blanch Garage |
| Stark Round Barn |
| Star School District 61 |
| State Soldiers Home Barn |
| St. Augustine Church |
| Stavig, Andrew and Mary, House |
| St. Bernard's Catholic Church |
| St. Charles Hotel |
| Stephens-Lucas House |
| Sterling Methodist Church |
| Stern, Gottlieb, House |
| Steven's, Dr., House |
| Stevens Opera Block |
| Stidworthy-Kemper House |
| St. John's Catholic Church |
| St. Lawrence O'Toole Catholic Church |
| St. Martin's Catholic Church and Grotto |
| St. Mary's Catholic Church |
| St. Mary's Church, School and Convent |
| St. Mary's School |
| Stocker, G. L., Blacksmith Shop |
| Stockgrowers Bank Building |
| Stock Judging Pavilion |
| Stock Yards State Bank and Tri-State Wholesale Grocery Co. |
| Stokes, Oliver O., House |
| St. Onge Schoolhouse |
| Stordahl, Olaf, Barn |
| St. Paul Lutheran Church and Cemetery |
| St. Peter's Lutheran Church |
| Stribral Homestead and Farmstead |
| Strouckel, John, House |
| St. Scholastica Catholic Church |
| St. Scholastica Rectory |
| Sturgis High School |
| St. Vincent's Hotel |
| St. Wenceslaus Catholic Church and Parish House |
| St. Williams Catholic Church |
| Sully County Courthouse |
| Sumner, Gaylord, House |
| Svatos, Frank, Rubblestone Barn |
| Swander Bakery Building |
| Swanson House |
| Swedish Lutheran Church of Strandburg |
| Sweep Hotel |
| Tabor School |
| Tackett Underwood Building |
| Tallent, Annie, House |
| Tarbell, Dr., House |
| Taylor, J.W., House |
| Teibel-Sykora Rubblestone Barn |
| Telemarken Lutheran Church |
| Texaco Super Service Station |
| Thielman-Stoddard House |
| Thomas, Charles A., House |
| Thompson House |
| Thomson, James S., House |
| Toomey House |
| Towner, Francis Averill (T. A.) and Janet Leach, House |
| Travnicek, John, Chalkrock House |
| Triangle Ranch |
| Trierweiler, Dr. John, House |
| Trinity Episcopal Church |
| Tri State Bakery |
| Trygstad Law and Commerce Building |
| Tubbs, Newton Seymour, House |
| Tuntland, Peder and Helga, Farmstead |
| Tuohino, Jacob and Amelia, Farm |
| Turner, Frank and Clara, House |
| Turton Jail |
| Tuthill, John W., Lumber Company |
| Uhlig, Otto L., House |
| Ulmer, J. W., House |
Data from United States Park Service and Wikidata
