| Cobalt City, MO (Village) |
| Cobb County, GA (County) |
| Cobb Village, WI (Village) |
| Cobbtown, GA (City) |
| Cobden, MN (City) |
| Cobden, IL (Village) |
| Cobleskill, NY (Village) |
| Cobleskill, NY (Town) |
| Coburg, IA (City) |
| Coburg, OR (City) |
| Coburn, ND (Township) |
| Cochecton, NY (Town) |
| Cochise County, AZ (County) |
| Cochran, GA (City) |
| Cochran County, TX (County) |
