- Comstock
- Comus
- Con Island
- Conception
- Concord
- Coney Island
- Conger
- Conners Island
- Constance
- Cook
- Cooley
- Coon Creek
- Coon Lake Beach
- Coon Rapids
- Cooper Island
- Coopers Corner
- Copas
- Corcoran
- Cordova
- Cormorant
- Corning
- Corona
- Correll
- Cort
- Corvuso
- Cosmos
- Cosmos Mobile Home Park
- Cottage Grove
- Cotton
- Cottonwood