Barrios de Maryland C
- Callaway-Garrison
- Calvert Hills Historic District
- Calverton
- Calverton PG
- Canton Square
- Cape St Claire
- Carney
- Central Park Heights
- Central Rockville
- Charles Village
- Cherry Hill
- Cheswolde
- Cheverly
- Chevy Chase Lake
- Chillum
- Chinquapin Park-Belvedere
- City Square
- Claremont-Freedom
- Clear Spring/Conococheague
- Colesville
- Coral Hills
- Cross Country
- Cross Keys
- Cylburn