Barrios de Maryland C
- Callaway-Garrison (1)
- Calvert Hills Historic District (16)
- Calverton (2)
- Calverton PG (3)
- Cameron Village (6)
- Camp Springs (2)
- Canton Square (33)
- Cape St Claire (1)
- Carmody Hills-Pepper Mill Village (1)
- Carney (1)
- Carroll South (2)
- Carrollton (6)
- Cedar Lane Farms (1)
- Cedmont (1)
- Cedonia (2)
- Central Forest Park (1)
- Central Park Heights (12)
- Central Rockville (16)
- Charles Village (47)
- Cherry Hill (6)
- Cheswolde (9)
- Cheverly (2)
- Chevy Chase Lake (6)
- Chevy Chase Terrace (3)
- Chevy Chase Village (1)
- Chillum (40)
- Chinquapin Park-Belvedere (1)
- Christopher (2)
- City Square (6)
- Claremont-Freedom (1)
- Clear Spring/Conococheague (3)
- Cloverly (2)
- Cold Spring (1)
- Colesville (4)
- College Park Woods (6)
- Coppin Heights (11)
- Coral Hills (14)
- Cross Country (1)
- Cross Keys (2)
- Cylburn (2)