- Cooper River, Berkeley County(S.C.) and Morgan River,Beaufort County (S.C.)1
- Cooper River, SC2
- Cooper River, South Carolina, United States1
- Cooper River,Berkeley County (S.C.)16
- Cooper River,Berkeley County (S.C.) and the Morgan River,Beaufort County (S.C.)1
- Coos Bay, Coos County, Oregon, United States1
- Coosawhatchie (S.C.)3
- Coosawhatchie, Jasper County, South Carolina, United States5
- Copalis Beach (Wash.)1
- Cope Hall7
- Copenhagen (Denmark)73
- Copenhagen (La.)1
- Copiapo, Atacama, Chile1
- Coppenhagen, Denmark1
- Copper Mine Hill, Cumberland, Providence County, Rhode Island, United States1
- Coquille River (Or.)1
- Coral Gables (Fla.)12
- Coral Gables, Miami-Dade County, Florida, United States1
- Cordoba6
- Corea (Me.)1