| | Ballwin city | 2903160 | St. Louis County 29189 | MO | St. Louis, MO-IL 41180 | St. Louis-St.
Charles-Farmington, MO-IL 476 | | https://maps.google.com/?q=Ballwincity+MO |
| | Bel-Nor village | 2904348 | St. Louis County 29189 | MO | St. Louis, MO-IL 41180 | St. Louis-St.
Charles-Farmington, MO-IL 476 | | https://maps.google.com/?q=Bel-Norvillage+MO |
| | Bel-Ridge village | 2904366 | St. Louis County 29189 | MO | St. Louis, MO-IL 41180 | St. Louis-St.
Charles-Farmington, MO-IL 476 | | https://maps.google.com/?q=Bel-Ridgevillage+MO |
| | Bella Villa city | 2904114 | St. Louis County 29189 | MO | St. Louis, MO-IL 41180 | St. Louis-St.
Charles-Farmington, MO-IL 476 | | https://maps.google.com/?q=BellaVillacity+MO |
| | Bellefontaine Neighbors
city | 2904222 | St. Louis County 29189 | MO | St. Louis, MO-IL 41180 | St. Louis-St.
Charles-Farmington, MO-IL 476 | | https://maps.google.com/?q=BellefontaineNeighborscity+MO |
| | Bellerive Acres city | 2904248 | St. Louis County 29189 | MO | St. Louis, MO-IL 41180 | St. Louis-St.
Charles-Farmington, MO-IL 476 | | https://maps.google.com/?q=Bellerivevillage+MO |
| | Berkeley city | 2904906 | St. Louis County 29189 | MO | St. Louis, MO-IL 41180 | St. Louis-St.
Charles-Farmington, MO-IL 476 | | https://maps.google.com/?q=Berkeleycity+MO |
| | Beverly Hills city | 2905248 | St. Louis County 29189 | MO | St. Louis, MO-IL 41180 | St. Louis-St.
Charles-Farmington, MO-IL 476 | | https://maps.google.com/?q=BeverlyHillscity+MO |
| | Black Jack city | 2906004 | St. Louis County 29189 | MO | St. Louis, MO-IL 41180 | St. Louis-St.
Charles-Farmington, MO-IL 476 | | https://maps.google.com/?q=BlackJackcity+MO |
| | Breckenridge Hills city | 2908164 | St. Louis County 29189 | MO | St. Louis, MO-IL 41180 | St. Louis-St.
Charles-Farmington, MO-IL 476 | | https://maps.google.com/?q=BreckenridgeHillscity+MO |