| Colwell, IA (City) |
| Colwich, KS (City) |
| Colwyn, PA (Borough) |
| Comal County, TX (County) |
| Comanche, OK (City) |
| Comanche, KS (Township) |
| Comanche, TX (City) |
| Comanche County, OK (County) |
| Comanche County, TX (County) |
| Comanche County, KS (County) |
| Combes, TX (Town) |
| Combine, TX (City) |
| Combined Locks Village, WI (Village) |
| Combs, MO (Township) |
| Comer, GA (City) |
