Towns
| State | City/Town | Town Title |
|---|---|---|
| Ohio | Colton | Colton, OH |
| Ohio | Columbia Station | Columbia Station, OH |
| Ohio | Columbiana | Columbiana, OH |
| Ohio | Columbus | Columbus, OH |
| Ohio | Columbus Grove | Columbus Grove, OH |
| Ohio | Commercial Point | Commercial Point, OH |
| Ohio | Conesville | Conesville, OH |
| Ohio | Conneaut | Conneaut, OH |
| Ohio | Conover | Conover, OH |
| Ohio | Continental | Continental, OH |
| Ohio | Convoy | Convoy, OH |
| Ohio | Coolville | Coolville, OH |
| Ohio | Corning | Corning, OH |
| Ohio | Cortland | Cortland, OH |
| Ohio | Coshocton | Coshocton, OH |
| Ohio | Covington | Covington, OH |
| Ohio | Creola | Creola, OH |
| Ohio | Crestline | Crestline, OH |
| Ohio | Creston | Creston, OH |
| Ohio | Crooksville | Crooksville, OH |
| Ohio | Croton | Croton, OH |
| Ohio | Crown City | Crown City, OH |
| Ohio | Cuba | Cuba, OH |
| Ohio | Cumberland | Cumberland, OH |
| Ohio | Curtice | Curtice, OH |