- Cooper
- Corinth
- Cottonwood
- Cove
- Covington
- Crawford
- Crosby
- Cross Plains
- Crystal City
- Cushing
- Cleveland
- C A Conner Colonia
- Caballo Island
- Caddo
- Caddo
- Cadena Colonia
- Cadiz
- Caesar
- Cain City
- Calabazas Islands
- Calallen
- Calaveras
- Calcutta Colonia
- Calder Highlands
- Calder Terrace
- Caldwell
- Caldwell Crossing
- Caldwood
- Caldwood Acres
- Caledonia