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| Bader | Berlin | Breckingridge |
| Baileyville | Berry | Breese |
| Baldwin | Berwick | Bridgeport |
| Banner | Berwyn | Bridgeview |
| Barclay | Bethalto | Brighton |
| Bardolph | Bethany | Brimfield |
| Barnhill | Bible Grove | Bristol |
| Barr | Biggs | Broadlands |
| Barrington | Bingsville | Broadview |
| Barry | Big Rock | Broadwell |
| Barstow | Bingham | Brocton |
| Bartelso | Birds | Brookfield |
| Bartlett | Bishop Hill | Brookport |
| Bartonville | Bismarck | Broughton |
| Basco | Bissell | Brownfield |
| Batavia | Blackstone | Browning |
| Batchtown | Blandinsville | Browns |
| Bates | Bloomingdale | Brownstown |
| Bath | Bloomington | Brussels |
| Baylis | Blue Island | Bryant |
| Beardstown | Blue Mound | Buckingham |
| Bearsdale | Bluff City | Buckley |
| Beason | Bluffs | Buckner |
| Beaverville | Bluff Springs | Buda |
| Beckemeyer | Bluford | Buffalo |
| Beecher | Boles | Buffalo Grove |
| Beecher City | Bolingbrook | Buffalo Hart |
| Belknap | Bolivia | Buffalo Prairie |
| Belle Rive | Bondville | Bulpitt |
| Belleville | Bone Gap | Buncombe |
| Bellflower | Bonfield | Bunker Hill |
| Bellmont | Bonnie | Burbank |
| Bellwood | Boody | Bureau |
| Belvidere | Bourbonnais | Burlington |
| Bement | Bowen | Burnham |
| Benld | Braceville | Burnside |
| Bensenville | Bradford | Burnt Prairie |
| Benson | Bradfordton | Bushnell |
| Benton | Bradley | Butler |
| Berkeley | Braidwood | Byron |