Barrios de Massachusetts C
- Cambridge Highlands (49)
- Cambridgepark (9)
- Cambridgeport (259)
- Carlisle (4)
- Cedar Woods (11)
- Central Billerica (7)
- Central Hudson (6)
- Central Maverick Square-Paris St (5)
- Central Peabody (36)
- Central Square (39)
- Central Tewksbury (6)
- Centralville (15)
- Charlestown Navy Yard (3)
- Chemistry (1)
- Chestnut Hill Middlesex (52)
- Chestnut Hill Norfolk (37)
- Chinatown (88)
- Cleghorn (5)
- Cleveland Circle (90)
- Codman Square-East Codman Hill (54)
- Columbia Point (2)
- Columbus Park-Worcester (5)
- Commonwealth (14)
- Conway Park (200)
- Coolidge Corner (1150)
- Crescent Beach (91)
- Crockerville (4)
- Cummingsville (10)
- Cushing Square (54)