| Code | Name | Region |
|---|---|---|
| USIGW | Bridgewater | VT |
| USIEU | Bridgewater Corners | VT |
| USRDN | Bridgman | MI |
| USBT3 | Bridgton | ME |
| USQRP | Bridport | VT |
| USBQG | Brier | WA |
| USERH | Brier Hill | PA |
| USBMC | Brigham City | UT |
| USBGK | Brighton | CO |
| USGXO | Brighton | IL |
| USRGH | Brighton | MA |
| USBHO | Brighton | MI |
| USBN2 | Brighton | MN |
| USBG5 | Brighton | MO |
| USRHT | Brighton | TN |
| USBTO | Brighton Heights | PA |
| USBHW | Brightwood | OR |
| USTJB | Brilliant | OH |
| USBDB | Bridgeport | NY |
| USB2P | Bridgeport | OH |
| USXCS | Bridgeport | PA |
| USDRB | Bridgeport | TX |
| USXDJ | Bridgeport | WV |
| USBIQ | Bridger | MT |
| US5BT | Bridgeton | IN |
| USBMZ | Bridgeton | MO |
| USIDQ | Bridgeton | NC |
| USBGY | Bridgeton | NJ |
| USBJT | Bridgetown | MD |
| USQVW | Bridgeview | IL |
| USXZX | Bridgeville | DE |
| USXCT | Bridgeville | PA |
| USGWR | Bridgewater | CT |
| USBJW | Bridgewater | MA |
| USBDT | Bridgewater | ME |
| USRWA | Bridgewater | MI |
| USBQF | Bridgewater | NJ |
| USBGW | Bridgewater | NY |
| USBXL | Brian | LA |
| USB2H | Brian Head | UT |
| US9BF | Briarcliff | TX |
| USBFJ | Briarcliff Manor | NY |
| USIYM | Bricelyn | MN |
| USYBK | Brick | NJ |
| USBIT | Bricktown | NJ |
| USXCE | Bridesburg | PA |
| USDIY | Bridge City | LA |
| USIGY | Bridge City | TX |
| USBJB | Bridgeburg | PA |
| USBHC | Bridgehampton | NY |