All - Constructed - 1910–1919
| Sacramento City Library |
| Sacramento Hall of Justice |
| Sacred Heart Cathedral |
| Sacred Heart Catholic Church and Rectory |
| Sacred Heart Church |
| Sacred Heart Church |
| Sacred Heart-Gros Cap Church |
| Sacred Heart of Jesus Church |
| Sacred Heart School |
| Sacred Heart Seminary |
| Safford High School |
| Saint Francis Xavier Roman Catholic Church |
| Saint George Melkite Catholic Church |
| Saint Joseph Seminary |
| Saint Luke African Methodist Episcopal Church |
| Saint Mary Ranger Station |
| Saint Matthew's Catholic Church |
| Saints Peter and Paul Catholic Church |
| Saints Peter and Paul Catholic Church Complex |
| Saints Peter and Paul Church |
| Saints Peter and Paul Church-Ukranian Catholic |
| Salazar-Candal House |
| Salem Methodist Episcopal Church |
| Salvo Post Office |
| Sanders, Erick Gustave, Mansion |
| Sand Hills Light Station |
| Sandpoint Burlington Northern Railway Station |
| Sanford, Arthur and Stella, House |
| San Francisco National Guard Armory and Arsenal |
| San Jacinto Street Bridge over Buffalo Bayou |
| San Joaquin Church |
| San Juan Island, Lime Kiln Light Station |
| San Luis Southern Railway Trestle |
| Santa Fe Depot |
| Saratoga Foothill Club |
| Sargent, Charles C., House |
| Sather Gate and Bridge |
| Sather Tower |
| Sauk City High School |
| Savona Mill |
| Sawyer, C. A., House (Second) |
| S Bridge |
| Schenley High School |
| Schmid, Alfred and Magdalena, Farmstead |
| Schofield Hall |
| Schreiber, Adolph, House |
| Schroeder, Heinrich H., Barn |
| Schurz, Carl, High School |
| Scottish Rite Cathedral |
| Scott, Kerr, Farm |
| Scotts Bluff National Monument |
| Scott, T. B., Free Library |
| Scribner House |
| Searcy Confederate Monument |
| Seated Lincoln |
| Seattle, Chief of the Suquamish, Statue |
| Seattle Public Library |
| Seattle Public Library |
| Seattle Public Library |
| Second Church of Christ Scientist |
| Second Church of Newton |
| Security Bank and Trust Company Building |
| Security Bank Building |
| Security Trust Building |
| Seiberling, Charles Willard, House |
| Seitaniemi, Alex, Housebarn |
| Selig Company Building |
| Selma Terrace |
| Seneca-Onderdonk-Woodward Historic District |
| Sequatchie County Courthouse |
| Seufert House |
| Sevareid, Alfred and Clara, House |
| Seven Hundred Five Davis Street Apartments |
| Severs Hotel |
| Seward Depot |
| Shakespeare Garden |
| Sharrow, Frances Kurth, House |
| Shattuck National Bank Building |
| Shaver Rental Houses District |
| Sheely Bridge |
| Shellito, Dr. Judd C. and Margaret S. Clarke, House |
| Shellsburg Bridge |
| Sheltering Arms Hospital |
| Sherman and Ross Block Building |
| Sherwood Lodge |
| Shores-Mueller Company |
| Shubert, Sam S., Theatre |
| Shubert, Sam S., Theatre and Shubert Building |
| Sibole, George, Store |
| Siebken's Resort |
| SIERRA (motor ship) |
| Silva, Arthur D., Water Tank |
| Silva, Manuel, Barn |
| Simmons, Alton, House |
| Simpsonville Baptist Church |
| Simsbury Bank and Trust Company Building |
| Sinclair, Rooney & Co. Building |
| Sioux Falls National Bank Building |
| Sisseton Carnegie Library |
| Sixteenth Street Baptist Church |
Data from United States Park Service and Wikidata
