Barrios de Maryland C
- Callaway-Garrison (1)
- Calvert Hills Historic District (27)
- Calverton (4)
- Calverton PG (1)
- Cameron Village (9)
- Camp Springs (2)
- Canton Square (23)
- Cape St Claire (2)
- Carderock Springs (1)
- Carmody Hills-Pepper Mill Village (2)
- Carney (1)
- Carroll Park (3)
- Carrollton (1)
- Cedmont (2)
- Cedonia (1)
- Central Park Heights (14)
- Central Rockville (18)
- Charles Village (51)
- Cherry Hill (4)
- Cheswolde (8)
- Cheverly (2)
- Chevy Chase Lake (10)
- Chevy Chase Park (1)
- Chevy Chase Terrace (1)
- Chevy Chase Village (4)
- Chillum (39)
- Chinquapin Park-Belvedere (2)
- Christopher (3)
- City Square (5)
- Claremont-Freedom (1)
- Clear Spring/Conococheague (3)
- Cloverly (2)
- Cold Spring (2)
- Colesville (3)
- College Park Woods (19)
- Coppin Heights (16)
- Coral Hills (8)
- Cottage City (1)
- Cross Country (1)
- Cylburn (2)