| Coffman Cove, AK (City) |
| Cofield, NC (Village) |
| Cogan House, PA (Township) |
| Coggon, IA (City) |
| Cogswell, ND (City) |
| Cohasset, MA (Town) |
| Cohasset, MN (City) |
| Cohoctah Township, MI (Township) |
| Cohocton, NY (Village) |
| Cohocton, NY (Town) |
| Cohoes, NY (City) |
| Cohutta, GA (City) |
| Coin, IA (City) |
| Coitsville Township, OH (Township) |
| Cokato, MN (City) |
