| Town / County |
Town / County |
Town / County |
| Babcock / Bremer | Babcock / Linn | Bach Grove / Wright |
| Bach Grove / Hamilton | Baden / Keokuk | Badger / Webster |
| Badger Hill / Tama | Badger Lake / Monona | Bagley / Guthrie |
| Bailey / Mitchell | Bailey's Ford / Delaware | Bailey's Grove / Hancock |
| Baird / Harrison | Baker / Jefferson | Bakers / Polk |
| Balaka / Clarke | Baldwin / Jackson | Balfour / Mills |
| Ballard / Audubon | Ballard's Grove / Story | Balltown / Dubuque |
| Balluff / Scott | Bally Claugh Grove / Dubuque | Ballyclough / Dubuque |
| Baltimore / Henry | Bancroft / Kossuth | Bangall / Henry |
| Bangor / Marshall | Bankston / Dubuque | Banner / Warren |
| Banner Valley / Linn | Barber / Clayton | Barclay / Black Hawk |
| Bard / Louisa | Barkersville / Marion | Barnes City / Mahaska |
| Barnes City / Poweshiek | Barney / Madison | Barnum / Webster |
| Barrwood / Scott | Barryville / Delaware | Bartlett / Fremont |
| Bartlettville / Clarke | Bassett / Chickasaw | Batavia / Jefferson |
| Bath / Cerro Gordo | Battle Creek / Ida | Bauer / Marion |
| Baum / Cherokee | Baxter / Jasper | Baxter / Keokuk |
| Baxter (P.O.) / Jasper | Bay / Delaware | Bayard / Guthrie |
| Bayerton / Johnson | Bayfield / Muscatine | Beach / Dickinson |
| Beacon / Mahaska | Beaconsfield / Ringgold | Beaman / Grundy |
| Bear Creek / Poweshiek | Bear Creek / Wapello | Bear Grove / Guthrie |
| Beaver / Boone | Beaver City / Chickasaw | Beaver Grove / Butler |
| Beaver Park / Dallas | Beck / Lee | Beckwith / Jefferson |
| BEDFORD / Taylor | Beebeetown / Harrison | Beech / Warren |
| Beelar's Grove / Floyd | Beery / Henry | Beetrace / Appanoose |
| Belfast / Henry | Belfast / Lee | Belgrove / Butler |
| Belinda / Lucas | Belknap / Davis | Bell / Crawford |
| Bell Air / Johnson | Bell Fountain / Mahaska | Bell's Lake / Sioux |
| Bell's Ridge / Madison | Bellair / Appanoose | Belle Plaine / Benton |
| Belle Point / Boone | Bellemont / Warren | Belleville / Jefferson |
| Belleville / Webster | Bellevue / Jackson | Belltown / Crawford |
| Belmond / Wright | Belmont Center / Warren | Beloit / Lyon |
| Belvidere / Monona | Ben Lomond / Pocahontas | Benan / Carroll |
| Benbow / Lee | Bennett / Cedar | Bennettville / Dubuque |
| Bennington / Marion | Benson / Black Hawk | Benson Grove / Winnebago |
| Benson Grove Station / Winnebago | Bentley / Pottawattamie | Benton / Benton |
| Benton / Mills | Benton / Ringgold | Benton / Van Buren |
| Benton (Station) / Benton | Benton Centre / Benton | Benton City / Benton |
| Bentonsport / Van Buren | Bentonville / Wayne | Berea / Adair |
| Bergen / Allamakee | Berkeley / Benton | Berkley / Boone |
| Berlin / Hardin | Berlin / Scott | Berlin / Tama |
| Bernard / Dubuque | Berne / Crawford | Bernhart / Jefferson |
| Bernina / Mahaska | Berry / Linn | Berry / Marion |
| Bertram / Linn | Berwick / Polk | Bethany Junction / Decatur |
| Bethel / Fayette | Bethel / Washington | Bethel City / Marion |
| Bethesda / Page | Bethlehem / Mills | Bethlehem / Wayne |
| Bettendorf / Scott | Beulah / Benton | Beulah / Clayton |
| Beverly / Linn | Bevington / Madison | Bevington / Warren |
| Biddick / Montgomery | Bidwell / Wapello | Big Canoe / Winneshiek |
| Big Grove / Mahaska | Big Grove / Pottawattamie | Big Mound / Lee |
| Big Rock / Scott | Big Spring / Wayne | Big Springs / Louisa |
| Big Woods / Jones | Bigler's Grove / Harrison | Billett Grove / Clay |
| Bingham / Page | Binns / Page | Birmingham / Van Buren |
| Bismarck / Clayton | Bismark / Union | Black Hawk / Davis |
| Black Hawk / Louisa | Black Hawk / Scott | Black Hawk City / Van Buren |
| Black Walnut / Palo Alto | Blackmore / Ringgold | Blaine / Buena Vista |
| Blair / Pottawattamie | Blair City / Cherokee | Blairgowrie / Palo Alto |
| Blairsburg / Hamilton | Blairstown / Benton | Blakesburg / Wapello |
| Blakeville / Black Hawk | Blanchard / Page | Blanden / Pocahontas |
| Blandensburg / Wapello | Blencoe / Monona | Blessing / Black Hawk |
| Bleucoe / Monona | Bliedorn / Clinton | Blockton / Ringgold |
| Blockton / Taylor | BLOOMFIELD / Davis | Bloomfield / Monona |
| Blooming Prairie / Pocahontas | Bloomingdale / Madison | Bloomington / Muscatine |
| Bloomington / Polk | Bloomington / Ringgold | Bloomington / Story |
| Blue Cut / Jones | Blue Grass / Scott | Blue Point / Jefferson |
| Blue Point / Poweshiek | Bluff Creek / Mahaska | Bluff Creek / Monroe |
| Bluff Dale / Des Moines | Bluff Point / Monona | Bluffs / Woodbury |
| Bluffton / Winneshiek | Boardman / Story | Bode / Humboldt |
| Boies / Black Hawk | Bois d'Arc / Grundy | Bolan / Worth |
| Bole / Humboldt | Bolton / Mahaska | Boltonville / Iowa |
| Bon Accord / Johnson | Bonair / Howard | Bonaparte / Van Buren |
| Bondurant / Polk | Boomer / Pottawattamie | Boomer Grove / Pottawattamie |
| BOONE / Boone | Boone / Dallas | Boone Springs / Clinton |
| Boone Station / Boone | Boone Valley Junction / Polk | Booneville / Boone |
| Booneville / Dallas | Boonsboro / Boone | Booty / Winneshiek |
| Border Plains / Webster | Borneo / Ringgold | Botany / Shelby |
| Botna / Pottawattamie | Botna / Shelby | Bottom / Monona |
| Boulder / Linn | Bouton / Dallas | Bovina / Tama |
| Bowen's Prairie / Jones | Boxelder / Mills | Boxholm / Boone |
| Boyan's Grove / Butler | Boyd / Black Hawk | Boyd / Butler |
| Boyd / Chickasaw | Boyd / Grundy | Boyden / Sioux |
| Boyer / Crawford | Boyer / Pottawattamie | Boyer River / Crawford |
| Boyer Station / Van Buren | Boyleston / Henry | Bozaris / Ringgold |
| Bracewell / Decatur | Braddyville / Page | Bradford / Chickasaw |
| Bradford / Franklin | Bradgate / Humboldt | Brainard / Fayette |
| Brandon / Buchanan | Brandy Brook / Linn | Brayton / Audubon |
| Brazile / Appanoose | Breckinridge / Bremer | Breda / Carroll |
| Bremen / Monroe | Bremer / Bremer | Bremer Center / Bremer |
| Brick House / Cedar | Bricker / Lee | Bridge Junction / Polk |
| Bridge Switch / Mills | Bridgeport / Boone | Bridgeport / Jackson |
| Bridgeport / Monroe | Bridgeport / Wayne | Bridgewater / Adair |
| Bridgewater / Clay | Brighton / Jefferson | Brighton / Washington |
| Briscoe / Adams | Bristol / Pottawattamie | Bristol / Worth |
| Bristow / Butler | Britt / Hancock | Broadway / Delaware |
| Broadway / Linn | Brock / Mahaska | Brogan / Crawford |
| Broken Kettle / Plymouth | Bromhall / Keokuk | Bromley / Marshall |
| Brompton / Monroe | Bronson / Woodbury | Brookdale / Plymouth |
| Brookfield / Clinton | Brooklin / Polk | Brooklyn / Benton |
| Brooklyn / Black Hawk | Brooklyn / Calhoun | Brooklyn / Madison |
| Brooklyn / Poweshiek | Brooks / Adams | Brookville / Adams |
| Brookville / Clayton | Brookville / Jefferson | Brough / Dallas |
| Brown / Linn | Brown's Mills / Davis | Browning / Carroll |
| Browns Settlement / Woodbury | Brownsville / Poweshiek | Brownville / Mitchell |
| Bruce / Wright | Brughier Bridge / Woodbury | Bruner / Tama |
| Brunsville / Plymouth | Brush Creek / Fayette | Brushy / Taylor |
| Brushy / Webster | Brushy Valley / Guthrie | Bryant / Clinton |
| Bryant / Polk | Bryantburg / Buchanan | Bryson / Wapello |
| Bubona / Emmet | Buchanan / Buchanan | Buchanan / Cedar |
| Buchanan / Fremont | Buchanan / Taylor | Buchanan / Webster |
| Buck Creek / Bremer | Buck Grove / Crawford | Buck Horn / Mahaska |
| Buckeye / Benton | Buckeye / Hardin | Buckingham / Tama |
| Buckland / Allamakee | Bucknams Crossing / Mitchell | Bucknell / Monroe |
| Bucyrus / Lucas | Bucyrus / Mahaska | Buda / Pocahontas |
| Budd / Dubuque | Buena Vista / Clayton | Buena Vista / Clinton |
| Buena Vista / Harrison | Buena Vista / Lee | Buenavista / Jefferson |
| Buffalo / Madison | Buffalo / Scott | Buffalo Center / Winnebago |
| Buffalo Fork / Kossuth | Buffalo Grove / Buchanan | Bullard / Lee |
| Bullock's Grove / Pottawattamie | Bunch / Davis | Buncombe / Dubuque |
| Bunker Hill / Allamakee | Burch / Polk | Burchinal / Cerro Gordo |
| Burdette / Franklin | Burgess / Clinton | Burk / Black Hawk |
| Burke / Benton | Burkhart's Point / Des Moines | BURLINGTON / Des Moines |
| Burns / Calhoun | Burnside / Webster | Burr Oak / Mitchell |
| Burr Oak / Winneshiek | Burr Oak Grove / Woodbury | Burr Oak Springs / Winneshiek |
| Burrell / Decatur | Burrington / Delaware | Burris / Louisa |
| Burris City / Louisa | Burt / Kossuth | Burton / Wapello |
| Bush / Jasper | Busil / Howard | Business Corners / Van Buren |
| Bussey / Marion | Busti / Howard | Butler / Keokuk |
| Butler Center / Butler | Butler Hill / Emmet | Butler Rapids / Butler |
| Butlerville / Tama | Buxton / Monroe | Byron / Humboldt |
