- Crosby
- Cross Plains
- Crystal City
- Cushing
- Cleveland
- Clark Station
- Cottonwood
- Caballo Island
- Cameron Park Colonia
- Carretas Crossing
- Carricitos
- Carricitos-Landrum Colonia
- Casa del Rey Colonia
- Cavazos
- Central Estates Colonia
- Channel Lots Colonia
- Chula Vista Colonia
- Chula Vista-Orason
- Cielito Lindo Colonia
- Cisneros Estates Colonia
- Clark Island
- Colonia Iglesia Antigua
- Colorado Island
- Combes Colonia
- Coronado Colonia
- Coulson Colonia
- Center Point
- Crossroads
- Capitola
- Carterville