- Cimic
- Claysville
- Cody
- Coleman
- Commanche Village
- Compro
- Cotton Hill
- Curran
- Coal Creek Island
- Coaler
- Cutmer
- Clarksburg
- Clarksburg
- Cora
- Crain
- Camp Ground
- Cravat
- Caldwell
- Cloverdale
- Coon Hollow Island
- Cooper
- Coopers Island
- Crandall
- Crescent
- Camden
- Chautauqua
- Crawford Towhead
- Campbell
- Cheneyville
- Coalton