- Bensenville
- Berwyn
- Bethalto
- Beaverton Crossroads
- Bel-Bo Mobile Home Park
- Blaine
- Big Rock
- Biggsville
- Birds
- Bishop Hill
- Blandinsville
- Benville
- Buckhorn
- Blue Island
- Bluffs
- Bluford
- Bolingbrook
- Bondville
- Bone Gap
- Bonfield
- Bonnie
- Blackhawk
- Burke
- Boulder Hill
- Bourbonnais
- Braceville
- Braidwood
- Bridgeview
- Broadlands
- Broadwell