About ZIP code 99403
The ZIP code 99403 routes mail to Clarkston in the Washington region of United States. Use it as the postal segment of any address in this area, and confirm unusual addresses with the local postal operator.
United States ยท ZIP code
99403 - Clarkston
ZIP code 99403 is Clarkston in Washington, United States.
| ZIP code | 99403 |
| Place | Clarkston |
| Region | Washington |
| District | Asotin |
| Country | United States (US) |
| Coordinates | 46.3946, -117.0645 (map) |