B
- Bacchus
- Ballard
- Ballard Junction
- Barbers
- Barro
- Barton
- Bauer
- Bear River City
- Bear Valley Junction
- Beaver
- Beaver Dam
- Beaver Dams Summer Homes Area
- Becks
- Beindneau Summer Home Area
- Belknap
- Bellwood Acres
- Benjamin
- Bennett
- Bennion
- Benson
- Beryl
- Beryl Junction
- Bicknell
- Big Plain Junction
- Big Sky Estates
- Big Water
- Bingham Canyon
- Birdseye
- Blackjack Lodge Condominiums
- Black Rock
- Blair
- Blanding
- Bloom
- Bloomington
- Blueacre
- Bluebell
- Blue Creek
- Bluff
- Bluffdale
- Bonanza
- Boneta
- Bone Valley
- Bonneville Heights
- Bonneville Tower Condominium
- Bonniebrook Estates
- Borden
- Bothwell
- Boulder
- Boulder Town
- Bountiful
- Brachipad Summer Home Area
- Brian Head
- Bridgeland
- Brigham City
- Brighton
- Brockwood
- Brown-Tye Meadows
- Bruin Point
- Bryants Fork Summer
- Bryce Canyon
- Buena Vista
- Bullion Falls
- Bullionville
- Burmester
- Burrville