| Code | Name | Region |
|---|---|---|
| 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 |
| USWNR | Weiner | AR |
| USWET | Weirton | WV |
| USIWI | Weiser | ID |
| USW3K | Waynoka | OK |
| USYWZ | Wayzata | MN |
| USWCJ | Weare | NH |
| US2WY | Weatherby | MO |
| USWYA | Weatherford | OK |
| USWEA | Weatherford | TX |
| USWEH | Weatherly | PA |
| USWWW | Weaver | AL |
| USVWX | Weaverville | CA |
| USWVV | Weaverville | NC |
| USXBW | Webb City | MO |
| USWER | Webberville | MI |
| USWEC | Weber City | VA |
| USFWS | Webster | FL |
| USWEB | Webster | MA |
| USYWB | Webster | MN |
| USW3T | Webster | NC |
| USUZJ | Webster | NY |
| USWT2 | Webster | SD |
| USWB3 | Webster | TX |
| USW9Y | Wayne | ME |
| USWNE | Wayne | MI |
| USWPY | Wayne | NE |
| USWYN | Wayne | NJ |
| USYNE | Wayne | NY |
| USWYE | Wayne | OK |
| USWNP | Wayne | PA |