| Code | Name | Region |
|---|---|---|
| USVWE | Walker | CA |
| USLKR | Walker | MI |
| USIBG | Waitsburg | WA |
| USWAI | Waitsfield | VT |
| USWK9 | Wakarusa | IN |
| USWK5 | Wake | VA |
| USWKR | Wake Forest | NC |
| USWKQ | Wakeeney | KS |
| USWKF | Wakefield | MA |
| USWFE | Wakefield | MI |
| USWJK | Wakefield | NE |
| USAKF | Wakefield | RI |
| USWKD | Wakefield | VA |
| USWA7 | Wakeman | OH |
| USWBG | Walbridge | OH |
| USVXS | Walburg | TX |
| USOJT | Walcott | IA |
| USWA3 | Walden | CO |
| USWDA | Walden | NY |
| USWD9 | Waldenburg | AR |
| USWLF | Waldo | FL |
| USW2D | Waldo | ME |
| USWM2 | Wagon Mound | NM |
| USWGE | Wagoner | OK |
| USWGW | Wagontown | PA |
| USWAQ | Wagram | NC |
| USHHI | Wahiawa | HI |
| USNAO | Wahoo | NE |
| USWAH | Wahpeton | ND |
| US5WA | Waialua | HI |
| US9AI | Waianae | HI |
| USWH7 | Waianae | HI |
| USWKL | Waikoloa | HI |
| USW8I | Wailea | HI |
| USWZV | Wailuku (maui) | HI |
| USBLW | Waimanalo | HI |
| USWM3 | Waimea | HI |
| USWIY | Wainscott | NY |
| USAIN | Wainwright | AK |
| USWPH | Waipahu (oahu) | HI |
| US9WI | Waite | ME |
| USITP | Waite Park | MN |
| USW9D | Waddell | AZ |
| USWAD | Waddington | NY |
| USWE8 | Wade | NC |
| USWNQ | Wadena | MN |
| USDEB | Wadesboro | NC |
| USZWV | Wadesville | IN |
| USWV2 | Wadeville | NC |
| USWR4 | Wading River | NY |