- Colfax
- Collins
- Collinsville
- Collison
- Colmar
- Colona
- Colonial Acres
- Colonial Meadows
- Colonial Village
- Colonial Village
- Colp
- Columbia
- Columbus
- Colusa
- Colvin Park
- Combs
- Comer
- Commanche Village
- Commerce Towhead (historical)
- Como
- Compro
- Compton
- Conant
- Concord
- Confidence
- Congerville
- Conlogue
- Conover
- Conrad
- Conroy Island