- Cinco Ranch
- Cisco
- Citrus City
- Clarksville City
- Claude
- Clear Lake Shores
- Cleburne
- Clint
- Cloverleaf
- Clute
- Cockrell Hill
- Coffee City
- Coldspring
- College Station
- Colleyville
- Colmesneil
- Comanche
- Combes
- Combine
- Comfort
- Conroe
- Converse
- Cool
- Coppell
- Copper Canyon
- Copperas Cove
- Corpus Christi
- Corral City
- Corrigan
- Corsicana