Barrios de Maryland C
- Calvert Hills Historic District (15)
- Calverton (5)
- Calverton PG (2)
- Cameron Village (6)
- Camp Springs (4)
- Canton Square (40)
- Cape St Claire (3)
- Carderock Springs (1)
- Carmody Hills-Pepper Mill Village (1)
- Carney (1)
- Carroll Park (1)
- Carroll Park Manor (2)
- Carrollton (4)
- Cedmont (2)
- Cedonia (1)
- Central Park Heights (18)
- Central Rockville (21)
- Charles Village (54)
- Cherry Hill (5)
- Cheswolde (9)
- Cheverly (2)
- Chevy Chase Lake (7)
- Chevy Chase Village (7)
- Chillum (38)
- Chinquapin Park-Belvedere (4)
- City Square (7)
- Claremont-Freedom (1)
- Clear Spring/Conococheague (2)
- Cloverly (3)
- Colesville (8)
- College Park Woods (13)
- Colmar Manor (1)
- Coppin Heights (12)
- Coral Hills (10)
- Cross Country (2)
- Cross Keys (1)
- Cylburn (2)