B
- Babson Park
- Back Bay
- Baconville
- Baird Four Corners
- Baker Bridge
- Bakers Grove
- Baldwinville
- Ballardvale
- Bancroft
- Baptist Corner
- Baptist Corners
- Baptist Village
- Bardwell
- Bardwell
- Barkerville
- Barneyville
- Barnstable
- Barre
- Barrowsville
- Bassets Corner
- Bass Rocks
- Bay State
- Bayview
- Beach Park
- Beach Point
- Beachwood
- Beaver
- Beaver Brook
- Beaver Brook Station
- Becket
- Bedford
- Beechwood
- Beechwood Estates
- Belchertown
- Bellevue
- Bellingham
- Belmont
- Belvidere
- Benjamins Landing
- Bennetts Corner
- Berkley
- Berkshire
- Berlin
- Bernardston
- Beverly
- Beverly Cove
- Beverly Farms
- Beverly Road
- Billerica
- Birds Hill
- Bisbee Corner
- Bisbee Mill
- Blackburn Village
- Blackinton
- Black Rock
- Blackstone
- Blanchardville
- Blandford
- Bliss Corner
- Blissville
- Bloomingdale
- Bolton
- Bondsville
- Bonny Rigg Corners
- Boston
- Bourne
- Bournedale
- Boxboro
- Boxford
- Boylston
- Boylston Center
- Bradstreet
- Braggville
- Braintree
- Braintree Highlands
- Braleys
- Brant Rock
- Brayton Point
- Breezy Hill
- Brewster
- Briarwood Beach
- Bridgewater
- Brier
- Briggs Corner
- Briggsville
- Brightwood
- Brimfield
- Brimstone Corner
- Brockton
- Brookfield
- Brookfield Mobile Home Park
- Brookline
- Brookside
- Brooks Place
- Brooks Village
- Brookville
- Brownell Corner
- Browns Point
- Brushwood
- Bryant Four Corners
- Buckland
- Buena Vista Shores
- Buffington Corner
- Buffinton Corner
- Buffumville
- Bullardville
- Burkville
- Burlington
- Burtts Crossing
- Butlerville
- Buzzards Bay
- Byfield