- Baldwin Heights
- Barbers Trailer Ranch
- Barnum
- Bedford Corners
- Bird
- Boardmanville
- Bowen
- Bradford Junction
- Bucktooth Island
- Blue Point
- Bohemia
- Baldwin Island
- Big Flats Airport
- Big Island
- Birchland Park
- Brookhaven
- Brookside Mobile Home Park
- Boonville
- Brewerton
- Brewster Hill
- Briarcliff Manor
- Bridgehampton
- Brightwaters
- Brinckerhoff
- Broadalbin
- Brockport
- Brocton
- Bronxville
- Brushton
- Buffalo