- Cobre
- Coin
- Colado
- Cold Spring
- Cold Springs
- Columbus
- Como
- Comus
- Contact
- Copper Basin
- Copper Flat
- Copper Run
- Copperfield
- Cordero
- Cortez
- Corwin
- Cosgrave
- Cottonwood Island
- Cottonwood Island (historical)
- Coyote Hole
- Crescent Island
- Crescent Valley
- Cressid
- Crestline
- Crossroads
- Crows Nest
- Crystal
- Crystal Bay
- Crystal Springs
- Currant