| Cincinnati Township, IA (Township) |
| Cincinnatus, NY (Town) |
| Cinco Bayou , FL (Town) |
| Cinnaminson Township, NJ (Township) |
| Circle, MT (Town) |
| Circle Pines, MN (City) |
| Circleville, KS (City) |
| Circleville, UT (Town) |
| Circleville, OH (City) |
| Circleville Township, OH (Township) |
| Cisco, IL (Village) |
| Cisco, TX (City) |
| Cisne, IL (Village) |
| Cissna Park, IL (Village) |
| Citronelle, AL (City) |
