Feature Name | Class | Elev. meters | County | Latitude DMS | Longitude DMS |
| Northeastern Elementary School | School | 409 | Logan | 40 21 58 N | 083 44 52 W |
| Pugh Ridge | Ridge | 409 | Belmont | 39 52 57 N | 080 58 33 W |
| Saint Johns Church | Church | 409 | Monroe | 39 40 07 N | 080 55 19 W |
| Saint Johns Lutheran Church of North Woodbury | Church | 409 | Morrow | 40 36 05 N | 082 39 46 W |
| Schell Cemetery | Cemetery | 409 | Monroe | 39 50 06 N | 081 10 10 W |
| Simon Slabach Cemetery | Cemetery | 409 | Holmes | 40 39 41 N | 081 45 55 W |
| Timothy Ridge | Ridge | 409 | Jefferson | 40 29 22 N | 080 52 00 W |
| Washburn Hill | Ridge | 409 | Highland | 39 08 16 N | 083 25 32 W |
| WCOM-TV (Mansfield) | Tower | 409 | Richland | 40 33 21 N | 082 26 41 W |
| Aaronsburg (historical) | Populated Place | 408 | Morrow | 40 23 54 N | 082 41 43 W |
| Bahl Helistop | Airport | 408 | Richland | 40 45 25 N | 082 33 01 W |
| Bellefontaine Municipal Airport | Airport | 408 | Logan | 40 24 43 N | 083 44 13 W |
| Circle Green | Populated Place | 408 | Jefferson | 40 29 04 N | 080 52 32 W |
| Clover Hill | Populated Place | 408 | Belmont | 39 52 16 N | 080 55 28 W |
| Darlington | Populated Place | 408 | Richland | 40 35 11 N | 082 36 17 W |
| Hannibal Ridge | Ridge | 408 | Monroe | 39 40 38 N | 080 53 23 W |
| Harbison School (historical) | School | 408 | Morrow | 40 40 56 N | 082 42 32 W |
| Jasinsky Cemetery | Cemetery | 408 | Logan | 40 24 22 N | 083 39 44 W |
| Mansfield Baptist Temple | Church | 408 | Richland | 40 46 42 N | 082 28 28 W |
| Norton Hill | Summit | 408 | Jefferson | 40 24 05 N | 080 43 52 W |
| Oak Post Office (historical) | Post Office | 408 | Monroe | 39 44 30 N | 080 56 24 W |
| Pulaskiville Community Bible Church | Church | 408 | Morrow | 40 31 53 N | 082 42 39 W |
| Pulaskiville Post Office (historical) | Post Office | 408 | Morrow | 40 32 00 N | 082 42 35 W |
| Sardis Ridge | Ridge | 408 | Monroe | 39 38 23 N | 080 54 55 W |
| South Miller School (historical) | School | 408 | Morrow | 40 34 18 N | 082 39 42 W |
| WWYS-FM (Cadiz) | Tower | 408 | Harrison | 40 17 33 N | 080 59 26 W |
| Possum Run Golf Course | Locale | 407 | Richland | 40 43 16 N | 082 30 37 W |
| Saint James Lutheran Church | Church | 407 | Monroe | 39 44 27 N | 080 55 25 W |
| Township of Perry | Civil | 407 | Morrow | 40 35 37 N | 082 39 12 W |
| White Wall School (historical) | School | 407 | Richland | 40 40 39 N | 082 28 24 W |
| Center School (historical) | School | 406 | Logan | 40 17 04 N | 083 41 40 W |
| Claridon Congregational Church | Church | 406 | Geauga | 41 31 56 N | 081 08 34 W |
| Mansfield General Hospital | Hospital | 406 | Richland | 40 45 08 N | 082 31 42 W |
| Mansfield General Hospital Heliport | Airport | 406 | Richland | 40 45 09 N | 082 31 42 W |
| Pleasant View Golf Club | Locale | 406 | Stark | 40 50 20 N | 081 07 36 W |
| Southeast Elementary School | School | 406 | Columbiana | 40 53 31 N | 080 49 48 W |
| The Lower Lake | Reservoir | 406 | Logan | 40 21 48 N | 083 41 60 W |
| Appleseed Ridge Lake Number Two | Reservoir | 405 | Logan | 40 22 54 N | 083 38 24 W |
| Appleseed Ridge Lake Number Two Dam | Dam | 405 | Logan | 40 22 54 N | 083 38 24 W |
| Berkshire High School | School | 405 | Geauga | 41 28 26 N | 081 08 47 W |
| Center Hill School (historical) | School | 405 | Richland | 40 40 53 N | 082 30 40 W |
| Central United Methodist Church | Church | 405 | Richland | 40 45 33 N | 082 31 45 W |
| Circle Green Methodist Episcopal Cemetery | Cemetery | 405 | Jefferson | 40 28 54 N | 080 52 36 W |
| Claridon Center Cemetery | Cemetery | 405 | Geauga | 41 32 00 N | 081 08 31 W |
| Dry Ridge | Ridge | 405 | Monroe | 39 48 21 N | 080 54 38 W |
| Johnny Appleseed Junior High School | School | 405 | Richland | 40 44 53 N | 082 31 38 W |
| Johnsville Elementary School | School | 405 | Morrow | 40 37 19 N | 082 39 38 W |
| Lincoln Heights Elementary School | School | 405 | Richland | 40 46 15 N | 082 28 39 W |
| Linden Road United Presbyterian Church | Church | 405 | Richland | 40 45 17 N | 082 32 55 W |
| Mead Cemetery | Cemetery | 405 | Champaign | 40 11 46 N | 083 36 49 W |
| Moore Corners | Locale | 405 | Morrow | 40 23 58 N | 082 43 55 W |
| Mount Zion Cemetery | Cemetery | 405 | Belmont | 39 59 48 N | 080 48 52 W |
| Palmer Spring | Spring | 405 | Richland | 40 46 47 N | 082 39 22 W |
| School Number 2 (historical) | School | 405 | Richland | 40 42 47 N | 082 36 36 W |
| Smoky Row School (historical) | School | 405 | Logan | 40 22 46 N | 083 38 17 W |
| Wooster Heights | Populated Place | 405 | Richland | 40 46 04 N | 082 27 55 W |
| Yankeetown School (historical) | School | 405 | Richland | 40 47 59 N | 082 28 30 W |
| Burroughs Cemetery | Cemetery | 404 | Geauga | 41 24 35 N | 081 06 15 W |
| Burton Village Historic District | Park | 404 | Geauga | 41 28 18 N | 081 08 42 W |
| Lincoln Heights Gospel Chapel | Church | 404 | Richland | 40 46 22 N | 082 28 48 W |
| McIntire Cemetery | Cemetery | 404 | Monroe | 39 44 23 N | 080 57 02 W |
| Mount Gilead Church | Church | 404 | Morrow | 40 30 11 N | 082 41 04 W |
| Oak | Populated Place | 404 | Monroe | 39 44 28 N | 080 56 22 W |
| WBNV-FM (Barnesville) | Tower | 404 | Belmont | 39 54 10 N | 081 12 36 W |
| Benner Hill | Ridge | 403 | Ross | 39 15 26 N | 083 16 40 W |
| Cane Ridge | Ridge | 403 | Monroe | 39 46 30 N | 080 54 35 W |
| Carpenter Elementary School | School | 403 | Richland | 40 45 26 N | 082 31 38 W |
| Chever Park | Park | 403 | Richland | 40 47 03 N | 082 38 56 W |
| Christian Assembly Church | Church | 403 | Richland | 40 46 12 N | 082 28 38 W |
| Circle Green Post Office (historical) | Post Office | 403 | Jefferson | 40 29 05 N | 080 52 34 W |
| Clear Fork Church | Church | 403 | Richland | 40 35 38 N | 082 22 23 W |
| First Brethren Church | Church | 403 | Richland | 40 46 13 N | 082 28 57 W |
| German Cemetery | Cemetery | 403 | Monroe | 39 48 36 N | 081 12 44 W |
| Half Acre School (historical) | School | 403 | Morrow | 40 39 13 N | 082 44 48 W |
| Hopewell Church | Church | 403 | Logan | 40 24 47 N | 083 44 39 W |
| Horseback Knob | Summit | 403 | Ross | 39 14 16 N | 083 05 27 W |
| Jacobsburg Cemetery | Cemetery | 403 | Belmont | 39 57 37 N | 080 54 10 W |
| Lexington High School | School | 403 | Richland | 40 40 22 N | 082 35 13 W |
| Morgan School (historical) | School | 403 | Knox | 40 32 20 N | 082 26 12 W |
| Saint James Lutheran Cemetery | Cemetery | 403 | Monroe | 39 44 27 N | 080 55 26 W |
| Saint Johns Methodist Cemetery | Cemetery | 403 | Monroe | 39 40 06 N | 080 55 20 W |
| School Number 10 (historical) | School | 403 | Richland | 40 46 01 N | 082 40 04 W |
| Switzer Cemetery | Cemetery | 403 | Columbiana | 40 50 09 N | 080 45 16 W |
| Sykes Ridge | Ridge | 403 | Monroe | 39 44 33 N | 080 54 56 W |
| Taber Mine | Mine | 403 | Harrison | 40 17 54 N | 080 59 45 W |
| Village Park | Park | 403 | Richland | 40 46 02 N | 082 38 08 W |
| Calmoutier Cemetery | Cemetery | 402 | Holmes | 40 40 01 N | 081 46 44 W |
| Centerville Elementary School | School | 402 | Belmont | 39 58 31 N | 080 57 39 W |
| Chestnut Oak Knob | Summit | 402 | Ross | 39 12 55 N | 083 06 12 W |
| Crozier Ridge | Ridge | 402 | Belmont | 39 57 22 N | 080 51 28 W |
| Four Corners Cemetery | Cemetery | 402 | Knox | 40 30 54 N | 082 22 44 W |
| Germano | Populated Place | 402 | Harrison | 40 24 30 N | 080 56 49 W |
| Germano Post Office (historical) | Post Office | 402 | Harrison | 40 24 30 N | 080 56 49 W |
| Gordon School (historical) | School | 402 | Morrow | 40 29 49 N | 082 38 44 W |
| Highland School (historical) | School | 402 | Holmes | 40 36 51 N | 082 05 29 W |
| Lake Maria | Reservoir | 402 | Richland | 40 40 30 N | 082 31 48 W |
| Lake Maria Dam | Dam | 402 | Richland | 40 40 30 N | 082 31 48 W |
| Long Lick Hill | Ridge | 402 | Highland | 39 09 24 N | 083 24 03 W |
| Malaga | Populated Place | 402 | Monroe | 39 51 17 N | 081 08 57 W |
| Mansfield City Cemetery | Cemetery | 402 | Richland | 40 44 40 N | 082 30 40 W |
| Mansfield Freewill Baptist Church | Church | 402 | Richland | 40 46 54 N | 082 26 47 W |
| McCoppin Hill | Summit | 402 | Highland | 39 09 51 N | 083 23 50 W |
| Morton Ridge Church | Church | 402 | Monroe | 39 39 54 N | 080 56 58 W |
| New Alexander Cemetery | Cemetery | 402 | Columbiana | 40 47 14 N | 080 59 39 W |
| New Middleton | Populated Place | 402 | Columbiana | 40 51 52 N | 080 54 54 W |
| Oakland Lutheran Church | Church | 402 | Richland | 40 48 51 N | 082 29 26 W |
| Pleasant Hill School (historical) | School | 402 | Richland | 40 35 41 N | 082 32 55 W |
| Ruble Cemetery | Cemetery | 402 | Monroe | 39 50 01 N | 080 56 08 W |
| Saint Genevieve Catholic Church | Church | 402 | Holmes | 40 39 58 N | 081 46 43 W |
| Salem Cemetery | Cemetery | 402 | Monroe | 39 39 53 N | 080 56 58 W |