Barrios de Maryland C
- Cabin John (1)
- Callaway-Garrison (8)
- Calvert Hills Historic District (14)
- Calverton (4)
- Calverton PG (2)
- Cameron Village (3)
- Camp Springs (1)
- Canton Square (41)
- Capitol Heights (5)
- Carmody Hills-Pepper Mill Village (1)
- Carney (1)
- Carroll South (1)
- Carrollton (2)
- Catonsville (14)
- Cedonia (1)
- Central Forest Park (2)
- Central Park Heights (12)
- Central Rockville (10)
- Charles Village (28)
- Cherry Hill (7)
- Cheswolde (9)
- Cheverly (4)
- Chevy Chase Lake (5)
- Chevy Chase Park (1)
- Chevy Chase Village (1)
- Chillum (42)
- Chinquapin Park-Belvedere (1)
- City Square (5)
- Claremont-Freedom (1)
- Clear Spring/Conococheague (3)
- Cloverly (2)
- Cockeysville (36)
- Colesville (10)
- College Estates (1)
- College Park (40)
- College Park Woods (9)
- Coppin Heights (13)
- Coral Hills (9)
- Crofton (12)
- Cross Country (1)
- Cylburn (5)