- Clinton (S.C.)1
- Clinton, Laurens County, South Carolina, United States 2
- Clio, Marlboro County, South Carolina, United States1
- Clover, York County, South Carolina, United States1
- Colleton (S.C.)3
- Colleton County (SC)3
- Colorado River (Colo.-Mexico)1
- Columbia (S.C.)448
- Columbia Airport, West Columbia, S.C.3
- Columbia, Richland County, South Carolina, United States32
- Columbia, S.C.2
- Columbia, South Carolina12
- Columbia, South Carolina 16
- Columbia, South Carolina and Charleston, South Carolina1
- Columbia, South Carolina, United States3
- Columbus (O.H.)1
- Coney Island (New York, N.Y.)2
- Cooper River (S.C.)3
- Cowes (England)1
- Cowpens (S.C.)2