- Banner
- Bannockburn
- Bardolph
- Barrington
- Barrington Hills
- Barry
- Bartelso
- Bartonville
- Basco
- Batchtown
- Bath
- Bay View Garden
- Baylis
- Beach Park
- Beardstown
- Beason
- Beaverville
- Beckemeyer
- Bedford Park
- Beecher
- Beecher City
- Belgium
- Belknap
- Belle Prairie City
- Belle Rive
- Bellevue
- Bellflower
- Bellmont
- Bellwood
- Belmont Cragin
- Bement
- Benld
- Bensenville
- Benson
- Bentley
- Berlin
- Bethalto
- Bethany
- Big Rock
- Biggsville
- Bingham
- Birds
- Birds
- Bishop Hill
- Blandinsville
- Bloomingdale
- Blue Island
- Blue Mound
- Bluffs
- Bluford
- Bolingbrook
- Bondville
- Bone Gap
- Bonfield
- Bonnie
- Boody
- Boulder Hill
- Bourbonnais
- Bowen
- Braceville
- Bradford
- Bradley
- Braidwood
- Breese
- Bridgeport
- Bridgeport
- Bridgeview
- Brighton Park
- Brimfield
- Broadlands
- Broadview
- Broadwell
- Brocton
- Brookfield
- Broughton
- Browning
- Browns
- Brownstown
- Brussels
- Bryant
- Buckingham
- Buckley
- Buckner
- Buda
- Buffalo Grove
- Bull Valley
- Bulpitt
- Buncombe
- Bunker Hill
- Bureau
- Burnham
- Burnt Prairie
- Burr Ridge
- Bush
- Bushnell
- Butler
- Byron
