| Code | Name | Region |
|---|---|---|
| USWQB | Westboro | WI |
| USWRO | Westborough | MA |
| USWZK | Westbrook | CT |
| USWTB | Westbrook | ME |
| USWBY | Westbury | NY |
| USVSY | Westby | WI |
| USWQH | Westchester | CA |
| USES3 | Westchester | IL |
| USXNP | Westchester | MA |
| USWC6 | Westchester | OH |
| USHPN | Westchester County Apt | NY |
| USWFF | Westcliffe | CO |
| USWE2 | Westerlo | NY |
| USWSX | West Sound | WA |
| USWSU | West Springfield | IL |
| USWSP | West Springfield | MA |
| USWPG | West Springfield | NH |
| US9WB | West Stockbridge | MA |
| USNZY | West Swanzey | NH |
| USWZH | West Terre Haute | IN |
| USYYT | West Tisbury | MA |
| USWT4 | West Trenton | NJ |
| USWUI | West Union | IA |
| USEUO | West Union | OH |
| USWUQ | West Union | OR |
| USWEU | West Union | SC |
| USWUT | West Unity | OH |
| USWVC | West Valley City | UT |
| USWWH | West Wareham | MA |
| USWWN | West Warren | MA |
| USXOJ | West Warwick | RI |
| USWW4 | West Wendover | NV |
| USWWJ | West Windsor | NJ |
| USWOT | West Point | NY |
| USWTP | West Point | PA |
| USVI2 | West Point | VA |
| USWXP | West Portal | NJ |
| USWR3 | West Portsmouth | OH |
| USZDG | West Reading | PA |
| USWRD | West Redding | CT |
| USW7R | West Richland | WA |
| USWJG | West Ridge | AR |
| USWRY | West Roxbury | MA |
| USXTR | West Rutland | VT |
| USWSM | West Sacramento | CA |
| USWPU | West Saint Paul | MN |
| USWS5 | West Salem | IL |
| USFHK | West Salem | OH |
| USWSS | West Salem | WI |
| USWS2 | West Sayville | IN |