- Corn Creek
- Corona
- Corsica
- Corson
- Cottonwood
- Cottonwood Island (historical)
- Council House
- Country Acres
- Country Estates Subdivision
- Country Gables Subdivision
- Country Village Mobile Park
- Crandall
- Crandon
- Craven
- Craven Corner
- Creighton
- Cresbard
- Creston
- Crocker
- Crook City
- Crooks
- Crow Creek
- Crow Lake
- Custer
- Cuthbert