Barrios de Massachusetts B
- Back Bay (615)
- Back Central (14)
- Bank Square (30)
- Bay (5)
- Bay Village (30)
- Beachmont (21)
- Beacon Hill (371)
- Belingham Square (27)
- Bell Hill (14)
- Bellrock (11)
- Belmont Center (36)
- Belmont Hill (4)
- Belvidere (12)
- Bentley College (5)
- Bleachery (20)
- Booth Apartments (1)
- Boston Common (83)
- Bowdoin North-Mount Bowdoin (30)
- Boyd Park (7)
- Bradford (27)
- Braintree Highlands (3)
- Brattle (38)
- Brightwood (3)
- Brittan Square (9)
- Broadmeadow Brook (26)
- Broadway (42)
- Brookline Village (247)
- Bunker Hill (1)
- Burlington Town Center (25)
- Burncoat (5)