Feature Name | Class | Elev. meters | County | Latitude DMS | Longitude DMS |
| Ruffner Cemetery | Cemetery | 288 | Fairfield | 39 46 17 N | 082 28 22 W |
| Saint Cecilias Catholic Church | Church | 288 | Cuyahoga | 41 27 53 N | 081 34 33 W |
| Saint Cecilias School | School | 288 | Cuyahoga | 41 27 54 N | 081 34 34 W |
| Saint Johns United Church of Christ | Church | 288 | Stark | 40 47 41 N | 081 31 13 W |
| Saint Pauls Lutheran Church | Church | 288 | Ashtabula | 41 44 12 N | 080 45 54 W |
| Saint Peter | Populated Place | 288 | Mercer | 40 27 01 N | 084 44 46 W |
| Saint Peter Elementary School | School | 288 | Mercer | 40 27 03 N | 084 44 45 W |
| Sardinia Reservoir | Reservoir | 288 | Brown | 39 01 00 N | 083 48 30 W |
| Sardinia Reservoir Dam | Dam | 288 | Brown | 39 01 00 N | 083 48 30 W |
| School Number 1 (historical) | School | 288 | Huron | 41 01 58 N | 082 46 17 W |
| School Number 11 (historical) | School | 288 | Huron | 41 08 22 N | 082 33 56 W |
| School Number 3 (historical) | School | 288 | Auglaize | 40 34 16 N | 084 05 24 W |
| School Number 3 (historical) | School | 288 | Brown | 39 00 26 N | 083 52 59 W |
| School Number 5 (historical) | School | 288 | Huron | 41 06 20 N | 082 35 13 W |
| School Number 9 (historical) | School | 288 | Butler | 39 29 35 N | 084 45 35 W |
| Shiloh Church | Church | 288 | Marion | 40 29 36 N | 083 13 54 W |
| Shreve Lake Wildlife Area | Park | 288 | Wayne | 40 41 05 N | 082 02 55 W |
| Shreve Presbyterian Church | Church | 288 | Wayne | 40 41 02 N | 082 01 22 W |
| Sidney Water Works | Locale | 288 | Shelby | 40 17 24 N | 084 09 03 W |
| Silver Street Elementary School | School | 288 | Marion | 40 35 37 N | 083 08 48 W |
| Smith Corners | Populated Place | 288 | Marion | 40 27 26 N | 083 02 50 W |
| Snyder Terrace (subdivision) | Populated Place | 288 | Clark | 39 56 18 N | 083 49 60 W |
| Springfield Chapel Cemetery | Cemetery | 288 | Muskingum | 39 56 27 N | 082 05 35 W |
| Springfield Water Treatment Plant | Building | 288 | Clark | 39 58 24 N | 083 48 36 W |
| Stone Ridge Plaza Shopping Center | Locale | 288 | Franklin | 40 03 15 N | 082 51 52 W |
| Strasburg United Methodist Church | Church | 288 | Tuscarawas | 40 35 52 N | 081 31 46 W |
| Strauss Ridge | Ridge | 288 | Scioto | 38 49 24 N | 082 52 08 W |
| Stringtown Park | Park | 288 | Montgomery | 39 36 34 N | 084 08 08 W |
| Strongsville High School | School | 288 | Cuyahoga | 41 18 12 N | 081 50 44 W |
| Sugar Grove Church | Church | 288 | Hardin | 40 46 36 N | 083 47 08 W |