Feature Name | Class | Elev. meters | County | Latitude DMS | Longitude DMS |
| First Baptist Church | Church | 262 | Allen | 40 44 41 N | 084 08 53 W |
| First Baptist Church | Church | 253 | Allen | 40 42 23 N | 084 21 13 W |
| First Christian Union Church | Church | 234 | Allen | 40 50 17 N | 084 20 12 W |
| First Church of Christ Scientist | Church | 261 | Allen | 40 44 25 N | 084 07 14 W |
| First Church of the Nazarene | Church | 262 | Allen | 40 44 15 N | 084 06 29 W |
| First Evangelical Lutheran Church | Church | 255 | Allen | 40 53 30 N | 083 53 44 W |
| First Federated Church | Church | 252 | Allen | 40 42 31 N | 084 21 08 W |
| First Mennonite Church | Church | 263 | Allen | 40 44 05 N | 084 05 47 W |
| First Mennonite Church | Church | 255 | Allen | 40 53 38 N | 083 53 34 W |
| First Methodist Episcopal Church | Church | 254 | Allen | 40 53 39 N | 083 53 33 W |
| First Presbyterian Church | Church | 254 | Allen | 40 53 36 N | 083 53 29 W |
| First United Church of Christ | Church | 271 | Allen | 40 44 39 N | 084 06 32 W |
| First United Methodist Church | Church | 261 | Allen | 40 44 18 N | 084 06 11 W |
| Fisher Cemetery | Cemetery | 291 | Allen | 40 44 33 N | 083 56 15 W |
| Fisher School (historical) | School | 294 | Allen | 40 44 48 N | 083 56 09 W |
| Fletcher Cemetery | Cemetery | 281 | Allen | 40 41 16 N | 084 05 22 W |
| Ford School (historical) | School | 244 | Allen | 40 47 13 N | 084 16 53 W |
| Fort Shawnee | Populated Place | 264 | Allen | 40 41 12 N | 084 08 16 W |
| Foundry Park | Park | 269 | Allen | 40 42 41 N | 084 05 55 W |
| Franklin Elementary School | School | 235 | Allen | 40 50 48 N | 084 20 15 W |
| Friendship Baptist Church | Church | 267 | Allen | 40 44 38 N | 084 06 01 W |
| Full Gospel Tabernacle | Church | 268 | Allen | 40 43 51 N | 084 05 28 W |
| Garfield Chapel | Church | 279 | Allen | 40 42 08 N | 084 04 17 W |
| Garfield Elementary School | School | 267 | Allen | 40 44 31 N | 084 05 56 W |
| Gethsemane Cemetery | Cemetery | 267 | Allen | 40 43 41 N | 084 08 10 W |
| Gomer | Populated Place | 237 | Allen | 40 50 42 N | 084 11 14 W |
| Gomer Elementary School | School | 238 | Allen | 40 50 39 N | 084 10 50 W |
| Gomer Post Office | Post Office | 238 | Allen | 40 50 40 N | 084 11 10 W |
| Gomer United Church of Christ | Church | 239 | Allen | 40 50 36 N | 084 11 09 W |
| Grace United Methodist Church | Church | 265 | Allen | 40 43 48 N | 084 06 23 W |
| Grassy Creek | Stream | | Allen | 40 45 26 N | 084 23 08 W |
| Gratz Cemetery | Cemetery | 260 | Allen | 40 51 30 N | 083 56 18 W |
| Greater Christ Temple | Church | 269 | Allen | 40 43 19 N | 084 05 57 W |
| Greenlawn Cemetery | Cemetery | 247 | Allen | 40 46 09 N | 084 12 09 W |
| Hadding Cemetery | Cemetery | 239 | Allen | 40 49 55 N | 084 12 13 W |
| Hall Cemetery | Cemetery | 275 | Allen | 40 47 03 N | 083 57 43 W |
| Hanley School (historical) | School | 248 | Allen | 40 44 36 N | 084 21 32 W |
| Harrod | Populated Place | 299 | Allen | 40 42 23 N | 083 55 17 W |
| Harrod Cemetery | Cemetery | 310 | Allen | 40 43 04 N | 083 55 27 W |
| Harrod Post Office | Post Office | 299 | Allen | 40 42 20 N | 083 55 20 W |
| Hartford (historical) | Populated Place | 246 | Allen | 40 44 10 N | 084 18 53 W |
| Hartford Cemetery | Cemetery | 246 | Allen | 40 44 19 N | 084 18 57 W |
| Hartford Christian Church | Church | 245 | Allen | 40 44 22 N | 084 18 57 W |
| Hartford School (historical) | School | 247 | Allen | 40 44 09 N | 084 18 53 W |
| Hartshorn Cemetery | Cemetery | 233 | Allen | 40 50 33 N | 084 17 27 W |
| Hawthorne Hills Golf Course | Locale | 274 | Allen | 40 45 19 N | 084 01 40 W |
| Hefner Cemetery | Cemetery | 286 | Allen | 40 43 52 N | 083 59 24 W |
| Heidelberg Church | Church | 283 | Allen | 40 44 09 N | 083 59 37 W |
| Helsel Church | Church | 254 | Allen | 40 43 12 N | 084 12 18 W |
| Heritage Park | Park | 259 | Allen | 40 41 41 N | 084 08 35 W |
| High Street Church | Church | 295 | Allen | 40 44 48 N | 083 53 58 W |
| High Street United Methodist Church | Church | 264 | Allen | 40 44 30 N | 084 07 39 W |
| Hillsville School (historical) | School | 246 | Allen | 40 53 28 N | 083 57 44 W |
| Hiptight School (historical) | School | 309 | Allen | 40 39 17 N | 083 58 30 W |
| Hog Creek | Stream | | Allen | 40 46 15 N | 083 57 21 W |
| Honey Run | Stream | | Allen | 40 48 59 N | 084 12 33 W |
| Hoover Park | Park | 259 | Allen | 40 43 39 N | 084 07 10 W |
| Horace Mann Elementary School | School | 266 | Allen | 40 44 52 N | 084 07 34 W |
| Huber Ditch | Canal | 269 | Allen | 40 49 10 N | 083 55 49 W |
| Huber School (historical) | School | 265 | Allen | 40 51 45 N | 083 53 16 W |
| Hullibarger Cemetery | Cemetery | 302 | Allen | 40 42 36 N | 083 57 25 W |
| Hume | Populated Place | 258 | Allen | 40 39 47 N | 084 12 03 W |
| Hume Post Office (historical) | Post Office | 258 | Allen | 40 39 50 N | 084 11 60 W |
| Ice School (historical) | School | 294 | Allen | 40 40 34 N | 083 58 32 W |
| Industry Park | Park | 258 | Allen | 40 43 56 N | 084 07 01 W |
| Interchange 120 | Crossing | 267 | Allen | 40 41 12 N | 084 07 24 W |
| Interchange 122 | Crossing | 274 | Allen | 40 41 56 N | 084 05 24 W |
| Interchange 124 | Crossing | 275 | Allen | 40 43 00 N | 084 04 31 W |
| Interchange 125 | Crossing | 270 | Allen | 40 43 45 N | 084 04 32 W |
| Interchange 127 | Crossing | 267 | Allen | 40 45 20 N | 084 04 32 W |
| Interchange 130 | Crossing | 271 | Allen | 40 45 38 N | 084 02 50 W |
| Interchange 134 | Crossing | 265 | Allen | 40 49 39 N | 083 58 33 W |
| Interchange 135 | Crossing | 266 | Allen | 40 49 59 N | 083 57 40 W |
| Interchange 140 | Crossing | 253 | Allen | 40 52 56 N | 083 53 60 W |
| Irving Elementary School | School | 268 | Allen | 40 45 12 N | 084 06 51 W |
| Jefferson Elementary School | School | 271 | Allen | 40 43 09 N | 084 05 28 W |
| Kemp | Populated Place | 254 | Allen | 40 43 25 N | 084 13 24 W |
| Kempton Post Office (historical) | Post Office | 254 | Allen | 40 43 25 N | 084 13 20 W |
| Kessler Run | Stream | | Allen | 40 45 12 N | 084 11 41 W |
| King Cemetery | Cemetery | 237 | Allen | 40 48 22 N | 084 17 13 W |
| King Run | Stream | | Allen | 40 44 27 N | 083 53 48 W |
| Kingdom Hall Jehovahs Witnesses | Church | 270 | Allen | 40 43 07 N | 084 05 23 W |
| Lafayette | Populated Place | 283 | Allen | 40 45 37 N | 083 56 55 W |
| Lafayette Cemetery | Cemetery | 282 | Allen | 40 45 45 N | 083 57 12 W |
| LaFayette Post Office | Post Office | 279 | Allen | 40 45 40 N | 083 56 50 W |
| Landeck | Populated Place | 243 | Allen | 40 48 04 N | 084 23 17 W |
| Landeck Elementary School | School | 243 | Allen | 40 48 05 N | 084 23 14 W |
| Landneck Post Office (historical) | Post Office | 243 | Allen | 40 48 00 N | 084 23 20 W |
| Leatherwood Ditch | Canal | 232 | Allen | 40 50 55 N | 084 14 22 W |
| Lewis Grove Cemetery | Cemetery | 265 | Allen | 40 48 41 N | 084 00 47 W |
| Liberty Chapel | Church | 278 | Allen | 40 47 06 N | 083 57 44 W |
| Liberty Chapel Cemetery | Cemetery | 277 | Allen | 40 47 04 N | 083 57 43 W |
| Lima | Populated Place | 268 | Allen | 40 44 33 N | 084 06 19 W |
| Lima Allen County Airport | Airport | 291 | Allen | 40 42 30 N | 084 01 35 W |
| Lima Baptist Temple | Church | 256 | Allen | 40 46 13 N | 084 07 14 W |
| Lima Bible Fellowship Church | Church | 269 | Allen | 40 44 24 N | 084 04 55 W |
| Lima Cemetery | Cemetery | 270 | Allen | 40 44 40 N | 084 05 51 W |
| Lima Center Shopping Center | Locale | 252 | Allen | 40 46 02 N | 084 09 20 W |
| Lima High School | School | 261 | Allen | 40 43 58 N | 084 06 33 W |
| Lima Mall Shopping Center | Locale | 256 | Allen | 40 45 55 N | 084 08 60 W |
| Lima Memorial Hospital | Hospital | 269 | Allen | 40 44 09 N | 084 05 09 W |
| Lima Memorial Hospital Heliport | Airport | 268 | Allen | 40 44 10 N | 084 05 15 W |
| Lima Missionary Baptist Church | Church | 270 | Allen | 40 43 45 N | 084 05 19 W |
| Lima Plaza Shopping Center | Locale | 258 | Allen | 40 45 45 N | 084 08 42 W |
| Lima Post Office | Post Office | 270 | Allen | 40 44 30 N | 084 06 32 W |
| Lima Public Library | Building | 269 | Allen | 40 44 26 N | 084 06 51 W |
| Lima Reservoir | Reservoir | 266 | Allen | 40 45 24 N | 084 02 54 W |
| Lima Stadium | Park | 261 | Allen | 40 44 23 N | 084 05 32 W |
| Lima State Hospital (historical) | Hospital | 263 | Allen | 40 46 54 N | 084 06 02 W |
| Lima Upground Reservoir Dam | Dam | 266 | Allen | 40 45 24 N | 084 02 54 W |