All - Constructed - 1820–1829
| Saragossa |
| """S"" Bridge II" |
| S Bridge, National Road |
| Scarborough, Maj. James, House |
| Schuylkill Navigation Canal, Oakes Reach Section |
| Scott, Andrew, House |
| Second Bank of the United States |
| Sharp, Elisha, House |
| Shepard Settlement Cemetery |
| Shockoe Hill Cemetery |
| Silver Lake Farm |
| Simmons, Peter, House |
| Smith-Jessup House |
| Sodus Point Lighthouse |
| South Reading Academy |
| Southwick, Elisha, House |
| Spring Hill |
| Spring Hill |
| Stanley |
| St. Augustine Lighthouse and Keeper's Quarters |
| St. Augustine's Chapel |
| Stephanie Plantation House |
| Stevens-Sommerfeldt House |
| Stewart House and Howard-Stewart Family Cemetery |
| St. George's Church |
| St. Joseph Proto Cathedral |
| St. Louis Cemetery No. 2 |
| Stonington Harbor Lighthouse |
| Stony Point Lighthouse |
| St. Paul's Episcopal Church Complex |
| St. Peter's Presbyterian Church and Spencertown Cemetery |
| Stratford Point Lighthouse |
| St. Stephen's Church |
| St. Stephen's Episcopal Church |
| Sudbury School No. 3 |
| Sullivan County Courthouse |
| Sullivant, Lucas, Building |
| Tabernacle Methodist Protestant Church and Cemetery |
| Ten Pound Island Light |
| Terrell, William, Homeplace |
| Thoreau-Alcott House |
| Tinker Cobblestone Farmstead |
| Tobey Homestead |
| Trabue, Daniel, House |
| Traveller's Rest |
| Trenton |
| Tuthill-Lapham House |
| Two Lights |
| Union Oyster House |
| United First Parish Church (Unitarian) of Quincy |
| U.S. Capitol Gatehouses And Gateposts |
| Valley Farm |
| Vaucluse |
| Vicary, Capt. William, House |
| Village View |
| Walcott Covered Bridge |
| Walterboro Library Society Building |
| Ward, Ephraim, House |
| Warwick Lighthouse |
| Washington Methodist Church |
| Washington Monument |
| Waters, Asa, Mansion |
| Watson-Sanders House |
| Waugh, Alexander P. and James S., House |
| Webster, Daniel, Family Home |
| Western Reserve Academy |
| Western State Hospital Complex |
| White, John and Chauncey, House |
| Whitney, Capt. Joel, House |
| Wiley, Caleb, House |
| Williams, Abner, Log House |
| Wilson, Henry, Shoe Shop |
| Wilson, Valentine, House |
| Wilson, William J., House |
| Wing-Allore House |
| Winn Farm |
| Wolf Trap Light Station |
| Wood Grove |
| Young, Daniel, House |
| Zook, Jacob, House |
Data from United States Park Service and Wikidata
