Barrios de Maryland C
- Callaway-Garrison (1)
- Calvert Hills Historic District (17)
- Calverton (7)
- Calverton PG (1)
- Cameron Village (1)
- Camp Springs (3)
- Canton Square (40)
- Cape St Claire (5)
- Carderock Springs (1)
- Carmody Hills-Pepper Mill Village (3)
- Carney (3)
- Carroll Park (2)
- Carroll Park Manor (1)
- Carroll South (2)
- Carrollton (1)
- Cedmont (2)
- Cedonia (1)
- Central Park Heights (17)
- Central Rockville (23)
- Charles Village (41)
- Cherry Hill (9)
- Cheswolde (7)
- Cheverly (3)
- Chevy Chase Lake (5)
- Chevy Chase Park (1)
- Chevy Chase Village (7)
- Chillum (46)
- Chinquapin Park-Belvedere (3)
- City Square (7)
- Claremont-Freedom (1)
- Clear Spring/Conococheague (6)
- Cloverly (2)
- Colesville (10)
- College Park Woods (8)
- Coppin Heights (13)
- Coral Hills (24)
- Cottage City (1)
- Cross Country (2)
- Cylburn (6)