All - Constructed - 1870–1879
| Reynolds, Henry T. and Rebecca, House |
| Rice, A.H., Silk Mill |
| Richardson Block |
| Rinard Covered Bridge |
| Rittenmeyer, F. X., House |
| Riverside Park and Drive |
| Roann Covered Bridge, 4th |
| Robertsdale Historic District |
| Roberts-Justice House |
| Roberts, Martin W., House |
| Robertson County Courthouse |
| Robertson, Eugene P., House |
| Robyville Bridge |
| Rock Barn Farm |
| Rockville Railroad Station |
| Rodrick Bridge |
| Root Covered Bridge |
| Ropp-Grabill House |
| Rosebud Hotel |
| Rose Island Lighthouse |
| Ross, John, Farm |
| Round Lake Logging Dam |
| Rural Hall |
| Saco High School (old) |
| Sacred Heart Catholic Church and Parsonage |
| Sacred Heart Church, Rectory, School and Convent |
| Sacred Heart Roman Catholic Church, Convent and Rectory |
| Saint Andrews Catholic Cathedral |
| Saint Bernard's Chruch Complex |
| Saint John Evangelical Lutheran Church |
| Saint John's Episcopal Church |
| Saint Saviour's Episcopal Church and Rectory |
| Saint Vincent de Paul |
| Saint Vincent's Infant Asylum |
| Salem Evangelical Church |
| Salem Evangelical Church |
| Salmagundi Club |
| Salt Creek Covered Bridge |
| Sam Bailey Building |
| Sandbrook-Headquarters Road stone-arch bridge over a tributary of the Third Neshanic River |
| Sandwich City Hall |
| San Francisco Art Institute |
| San Francisco Cable Cars |
| Santa Maria Plantation House |
| Sauer Castle |
| Schech Mill |
| Schlapp, George E., House |
| School House |
| Schuttler, Henry and Mary, House |
| Scottown Covered Bridge |
| Seawanhaka Corinthian Yacht Club |
| Second Presbyterian Church |
| Seely, John H., House |
| Shaffer, Enoch, House |
| Shard Villa |
| Shattuck, Ralph W., House |
| Sheldon Jackson School |
| Shelley-Tipton House |
| Shelton House |
| Shields' Mill Covered Bridge |
| Ship John Shoal Light Station |
| Short's Hotel |
| Shrine of Our Lady of Sorrows |
| Silver Springs |
| Sixth Street Railroad Bridge |
| Skindrud, Eric and Jerome, Farm |
| Skinner, Richard M., House |
| Smith, Adam and Mary, House |
| Smith County Courthouse |
| Smith Covered Bridge |
| Smith-Culhane House |
| Smith, Curtis S., House |
| Smith Farmhouse |
| Smithfield Plantation House |
| Smith, Francis West, House |
| Smith, Samuel Gilbert, Farmstead |
| Smith, Woral C., Lime Kiln and Limestone House |
| Snoke Farmstead |
| Soldiers and Sailors Monument |
| Soldiers' Monument |
| Soule, Lawrence, House |
| South Branch Schoolhouse |
| South Hall |
| South Round Valley School |
| Southwest Ledge Lighthouse |
| Southworth House |
| Sowers, Philip, House |
| Spectacle Reef Light Station |
| Spencerville Covered Bridge |
| Springdale Farm |
| Springer Opera House |
| Springfield Public School |
| Springville Presbyterian Church |
| Stafford, W. R., Worker's House |
| Staker, Alma, House |
| St. Albertus Roman Catholic Church |
| St. Alexander Nevsky Chapel |
| St. Andrew's Episcopal Church & Rectory |
| Stark County Courthouse and Annex |
| Star Theatre |
Data from United States Park Service and Wikidata
