| Code | Name | Region |
|---|---|---|
| US8PL | Woodland | MS |
| USZND | Woodland | PA |
| USWUX | Woodland | WA |
| USWPD | Woodland Hills | CA |
| USNIS | Woodland Hills | UT |
| USWUV | Wood Village | OR |
| US8DC | Woodacre | CA |
| USOO4 | Woodbine | GA |
| USOOD | Woodbine | MD |
| USWB8 | Woodbine | NJ |
| USWB6 | Woodbourne | NY |
| USW9R | Woodbridge | CA |
| USWOB | Woodbridge | CT |
| USWBZ | Woodbridge | NJ |
| USWBX | Woodbridge | VA |
| USWUB | Woodburn | IN |
| USTVN | Woodburn | KY |
| USWBJ | Woodburn | OR |
| USXNO | Woodbury | CT |
| USZYB | Woodbury | GA |
| USWDY | Woodbury | MN |
| USWOJ | Woodbury | NJ |
| US8TT | Woodbury | NY |
| USQDB | Woodbury | TN |
| US7WY | Woodbury | VT |
| USWIX | Wixom | MI |
| USWBN | Woburn | MA |
| USXWO | Wolcott | CT |
| USOJO | Wolcott | IN |
| USOOT | Wolcott | NY |
| US8WT | Wolcott | VT |
| USTIE | Wolcottville | IN |
| USWZB | Wolf Creek | KY |
| USWL8 | Wolf Lake | IL |
| USOLF | Wolf Point | MT |
| USV67 | Wolfe City | TX |
| USWFB | Wolfeboro | NH |
| USWOF | Wolfforth | TX |
| USWDF | Womelsdorf | PA |
| USQOK | Wonder Lake | IL |
| USWOG | Wonewoc | WI |
| USWDD | Wood Dale | IL |
| USWRV | Wood River | IL |
| USWR7 | Wood River | NE |
| USWJU | Wood River Junction | RI |
| USYWT | Winthrop | IA |
| USIHP | Winthrop | MA |
| USIRP | Winthrop | ME |
| USWIG | Winthrop | MN |
| USWPX | Winthrop Harbor | IL |