Feature Name | Class | Elev. meters | County | Latitude DMS | Longitude DMS |
| Rose Hill | Populated Place | 329 | Darke | 40 18 31 N | 084 43 32 W |
| Rosemont | Populated Place | 329 | Mahoning | 41 03 48 N | 080 53 11 W |
| Ross-Pike County Tabernacle | Church | 329 | Ross | 39 11 35 N | 083 08 52 W |
| Rosse Hall | Building | 329 | Knox | 40 22 26 N | 082 23 51 W |
| Rowland Cemetery | Cemetery | 329 | Stark | 40 47 35 N | 081 21 11 W |
| Rowsburg Cemetery | Cemetery | 329 | Ashland | 40 51 33 N | 082 09 17 W |
| Saint Ashworth Temple Church of God in Christ | Church | 329 | Summit | 41 04 02 N | 081 33 37 W |
| Saint Charles Catholic Church | Church | 329 | Mahoning | 41 01 23 N | 080 39 59 W |
| Saint Johns Cemetery | Cemetery | 329 | Perry | 39 38 32 N | 082 16 34 W |
| Saint Luke Catholic Church | Church | 329 | Mahoning | 41 02 44 N | 080 38 01 W |
| Saint Mark Center | Building | 329 | Cuyahoga | 41 29 50 N | 081 27 50 W |
| Saint Michael Catholic Church | Church | 329 | Champaign | 40 04 20 N | 083 33 30 W |
| Saint Pauls Episcopal Church | Church | 329 | Medina | 41 08 22 N | 081 51 36 W |
| Salem School (historical) | School | 329 | Champaign | 40 14 09 N | 083 52 57 W |
| Sally Buffalo Park Dam | Dam | 329 | Harrison | 40 15 30 N | 081 00 17 W |
| Sally Buffalo Park Reservoir | Reservoir | 329 | Harrison | 40 15 30 N | 081 00 17 W |
| Sauers Junior High School | School | 329 | Stark | 40 47 15 N | 081 24 25 W |
| School Number 1 (historical) | School | 329 | Crawford | 40 53 13 N | 082 46 52 W |
| School Number 1 (historical) | School | 329 | Wayne | 40 53 18 N | 081 41 10 W |
| School Number 16 (historical) | School | 329 | Wayne | 40 56 28 N | 082 06 40 W |
| School Number 2 (historical) | School | 329 | Richland | 40 56 42 N | 082 42 31 W |
| School Number 5 (historical) | School | 329 | Champaign | 40 14 02 N | 083 50 60 W |
| Schrader Corners | Locale | 329 | Mahoning | 41 04 34 N | 080 55 41 W |
| Seeley G Mudd Learning Center | Building | 329 | Licking | 40 04 14 N | 082 31 33 W |
| Severance Hall | Building | 329 | Wayne | 40 48 34 N | 081 56 09 W |
| Shady Bowl Speedway | Locale | 329 | Champaign | 40 15 28 N | 083 56 09 W |
| Shakeltown Post Office (historical) | Post Office | 329 | Highland | 39 10 30 N | 083 40 40 W |
| Shiloh | Populated Place | 329 | Richland | 40 58 00 N | 082 36 02 W |
| Shiloh Elementary School | School | 329 | Richland | 40 58 08 N | 082 36 03 W |
| Shiloh Post Office | Post Office | 329 | Richland | 40 58 00 N | 082 35 60 W |