Barrios de Massachusetts C
- Cambridge Highlands (36)
- Cambridgepark (7)
- Cambridgeport (210)
- Carlisle (7)
- Cedar Woods (4)
- Central Billerica (26)
- Central Hudson (9)
- Central Maverick Square-Paris St (5)
- Central Peabody (25)
- Central Square (39)
- Central Tewksbury (4)
- Centralville (24)
- Charlestown Navy Yard (3)
- Chemistry (2)
- Chestnut Hill Middlesex (27)
- Chestnut Hill Norfolk (13)
- Chinatown (86)
- Cleghorn (4)
- Cleveland Circle (118)
- Codman Square-East Codman Hill (38)
- Columbia Point (2)
- Columbus Park-Worcester (7)
- Commonwealth (7)
- Conway Park (155)
- Coolidge Corner (838)
- Cottage Hill (3)
- Crescent Beach (37)
- Crockerville (1)
- Cummingsville (6)
- Cushing Square (34)