About postcode 6403
The postcode 6403 routes mail to Grass Valley in the Western Australia region of Australia. Use it as the postal segment of any address in this area, and confirm unusual addresses with the local postal operator.
Australia ยท Postcode
6403 - Grass Valley
Postcode 6403 is Grass Valley in Western Australia, Australia.
| Postcode | 6403 |
| Place | Grass Valley |
| Region | Western Australia |
| District | Northam |
| Country | Australia (AU) |
| Coordinates | -31.6373, 116.7976 (map) |