| Code | Name | Region |
|---|---|---|
| USW9T | White Oak | MD |
| USVDK | White Oak | NC |
| USWXB | White Oak | PA |
| USWFW | Wheatland | WI |
| USEAN | Wheatland | WY |
| USWE4 | Wheatley | AR |
| USWHX | Wheaton | IL |
| USWFA | Wheaton | MD |
| USW3H | Wheaton | MN |
| USEEE | Wheeler | MI |
| USWHE | Wheeling | IL |
| USHLG | Wheeling | WV |
| USNUW | Whidbey Island | WA |
| USW5G | Whigham | GA |
| USWHI | Whippany | NJ |
| USWZX | Whipple | OH |
| USPW7 | Whispering Pines | NC |
| USHTR | Whistler | AL |
| USWKT | Whitakers | NC |
| USWUH | White | GA |
| USYWX | White | GA |
| USZWT | White | SD |
| USWTE | White Bear Lake | MN |
| USWUK | Wetumpka | AL |
| USVRQ | Wever | IA |
| USW3W | Wewahitchka | FL |
| USWUE | Wewoka | OK |
| USWXD | Wexford | PA |
| USWWI | Weyauwega | WI |
| USU3V | Weybridge | VT |
| USWGQ | Weyers Cave | VA |
| USWEY | Weymouth | MA |
| USW2Q | Whalan | MN |
| USWWP | Whale Pass | AK |
| USAE3 | Whaleysville | MD |
| USWTQ | Wharton | NJ |
| USWHT | Wharton | TX |
| USYWH | Whately | MA |
| USWQE | Wheat Ridge | CO |
| USFWH | Wheatfield | IN |
| USW3F | Wheatfield | NY |
| USW3D | Wheatland | IA |
| USWGL | Wheatland | PA |
| USWPE | Westport | MA |
| USW6P | Westport | MD |
| USWPP | Westport | PA |
| USWP4 | Westport | SD |
| USWSZ | Westport | WA |
| USZWI | Westport Point | MA |
| USWJS | Westside | IA |