- Belltower
- Butte
- Belt Creek
- Big Stone Colony
- Blythe
- Buckshot Island
- Beebe
- Bonfield
- Brenna Trailer Court
- Butte Creek
- Baxter
- Beaver Creek
- Becket
- Bell Ranch Colony
- Brooks
- Batavia
- Bear Creek Village
- Big Sky Colonial Manor
- Blacktail
- Brenchley Mobile Home Park
- Balmont
- Belgrade Junction
- Belgrade Trailer Court
- Belgrade Village Mobile Home Park
- Big Sky Canyon Village
- Big Sky Meadow Village
- Big Sky Mobile Home Court
- Bisel
- Blackwood
- Bridger View Trailer Court