New York - Area of significance: Exploration/Settlement
| Setauket Presbyterian Church and Burial Ground |
| Seven Oaks Estate |
| Sharpe Homestead and Cemetery |
| Sheldon-Owens Farm |
| Sherman Farm |
| Sherwood Family Estate |
| Sherwood House |
| Sherwood-Jayne House |
| Shew, Godfrey, House |
| Shore Road Historic District |
| Sidney Historic District |
| Sixteen Mile District |
| Smith Estate |
| Smithfield Presbyterian Church |
| Smith, Henry, Farmstead |
| Smith, Henry Tunis, Farm |
| Smith, Jacob, House |
| Smith, Obadiah, House |
| Smith Tavern |
| Snells Bush Church and Cemetery |
| Southampton Village Historic District |
| South End-Groesbeckville Historic District |
| South Farmington Friends Cemetery and Meetinghouse Site |
| Southold Historic District |
| Southold Milestone 7 |
| South Otselic Historic District |
| South Salem Presbyterian Church Cemetery |
| South Salina Street Historic District |
| Spencertown Historic District |
| Stafford Village Four Corners Historic District |
| St. Andrew's Cemetery |
| Stanton Hill Cemetery |
| Sterling Grist Mill Complex |
| Sternberg, Abraham, House |
| Stevens-Sommerfeldt House |
| Stillwater Mountain Fire Observation Station |
| St. John's Episcopal |
| St. John's Episcopal Church |
| St. John's Protestant Episcopal Church |
| St. Mark’s Episcopal Church & Cemetery |
| Stocking, Samuel, House |
| Stonehouse Farm |
| Stone Jug |
| Stone-Tolan House |
| Stone Windmill |
| Stonihurst |
| Stony Kill Farm |
| Stoothoff-Baxter-Kouwenhaven House |
| Stower, Asa, House |
| St. Paul's Church |
| St. Paul's Church and Cemetery |
| St. Paul's Lutheran Church |
| St. Paul's Lutheran Church Historic District |
| St. Paul's Lutheran Church, Parsonage and Cemetery |
| St. Peter's Episcopal Church Complex |
| Straight, Elisha, House |
| Strong, Thomas, House |
| St. Stephen’s Chapel |
| St. Stephen's Church |
| Sulphur Springs Cemetery |
| Sutherland Cemetery |
| Sutherland, David, House |
| Suydam House |
| Swart House and Tavern |
| Swart-Wilcox House |
| Sweet Hollow Presbyterian Church Parsonage |
| Sylvan Grove Cemetery |
| Talcottville Cemetery |
| Tallman-Budke and Vanderbilt-Budke-Traphagen Houses |
| Tappan Historic District |
| Ten Broeck, Benjamin, House |
| Ten Mile River Baptist Church |
| Teoronto Block Historic District |
| Terpenning-Johnson House and Cemetery |
| Terry-Mulford House |
| Thatch Meadow Farm |
| The Bowery Historic District |
| Thomson Family Farm |
| Town Doctors' House and Site |
| Townsend, Henry, House |
| Trapps Mountain Hamlet Historic District |
| Trinity Church |
| Trinity Episcopal Church |
| Trinity Lutheran Church and Cemetery |
| Trumpbour Homestead Farm |
| Turner Farmhouse |
| Tuthill, David, Farmstead |
| Tuthill, Jesse and Ira, House |
| Tuthill-Lapham House |
| Underhill, George, House |
| Union Chapel |
| Union Meeting House |
| Union Street Historic District |
| Van Alen, Luycas, House |
| Van Alstyne House |
| Van Campen, Moses, House |
| Van Cortlandt Manor |
| Van Cortlandt Upper Manor House |
| Vander Ende-Onderdonk House Site |
| Van Hoesen, Jan, House |
Data from United States Park Service and Wikidata
