- Clipper Gap
- Clipper Mills
- Clotho
- Clover Flat
- Clover Rock
- Cloverdale
- Cloverleaf Canyon
- Cluster Cone Rocks
- Clyde
- Coarsegold
- Coast Guard Island
- Cobbs Island
- Coburn
- Cochrane
- Cock Robin Island
- Codora
- Coffee
- Coffee Creek
- Coffing
- Cohasset
- Cold Fork
- Cold Springs
- Cold Springs
- Cole
- Coleman
- Coleville
- Colfax Spring
- College City
- College Heights
- Collegeville