Barrios de Maryland C
- Callaway-Garrison (1)
- Calvert Hills Historic District (16)
- Calverton (3)
- Calverton PG (5)
- Cameron Village (6)
- Camp Springs (3)
- Canton Square (34)
- Cape St Claire (3)
- Carmody Hills-Pepper Mill Village (2)
- Carney (2)
- Carroll Park (1)
- Carroll Park Manor (1)
- Carroll South (1)
- Carrollton (3)
- Cedonia (1)
- Central Forest Park (1)
- Central Park Heights (17)
- Central Rockville (20)
- Charles Village (52)
- Cherry Hill (4)
- Cheswolde (7)
- Cheverly (2)
- Chevy Chase Lake (7)
- Chevy Chase Park (2)
- Chevy Chase Terrace (1)
- Chevy Chase Village (7)
- Chillum (47)
- Chinquapin Park-Belvedere (3)
- Christopher (1)
- City Square (7)
- Claremont-Freedom (1)
- Clear Spring/Conococheague (8)
- Cloverly (1)
- Colesville (7)
- College Park Woods (10)
- Coppin Heights (13)
- Coral Hills (15)
- Cross Country (2)
- Cylburn (4)