| Code | Name | Region |
|---|---|---|
| USIWU | Wells | MI |
| USWS7 | Wells | MN |
| USLWL | Wells | NV |
| USWR6 | Wells River | VT |
| USWBP | Wellsboro | PA |
| USWB5 | Wellsburg | IA |
| USWES | Wellsburg | WV |
| USOHW | Wellston | OH |
| USWSV | Wellsville | KS |
| USWVM | Wellsville | MO |
| USELZ | Wellsville | NY |
| USW22 | Wellsville | OH |
| USKJZ | Wellsville | PA |
| USIPB | Weissport | PA |
| USW8H | Welch | MN |
| USOWC | Welch | OK |
| USEOM | Welcome | LA |
| USWCO | Welcome | NC |
| USW8E | Weld | ME |
| USWL4 | Weldon | CA |
| USI6O | Weldon | IA |
| USKDO | Weldon | IL |
| USWEO | Weldon | NC |
| US4WS | Weldon Spring | MO |
| USW3N | Weldona | CO |
| USZF4 | Wellborn | FL |
| USWEL | Wellesley | MA |
| US3OL | Wellfleet | MA |
| USWEF | Wellford | SC |
| USZJJ | Wellington | AL |
| USW4G | Wellington | CO |
| USWJT | Wellington | FL |
| USWCZ | Wellington | IL |
| USW3S | Webster | WI |
| USEBS | Webster City | IA |
| USWG6 | Webster Groves | MO |
| USWZ4 | Webster Springs | WV |
| USAFW | Webster, Harris | TX |
| USWV5 | Websterville | VT |
| USW9F | Wedgefield | SC |
| USXWD | Wedowee | AL |
| USWRW | Wedron | IL |
| USWD3 | Weed | CA |
| USEES | Weedsport | NY |
| USWJQ | Weehawken | NJ |
| USWKS | Weeks | LA |
| USEPG | Weeping Water | NE |
| USW2E | Weesatche | TX |
| USIMN | Weidman | MI |
| USWJR | Weimar | TX |