Home Postcodes by state WA 6560 Postcode 6560 6560 is the postcode for Wundowie, WA. Localities with postcode 6560WundowieWA Postcode 6560 State or territory Western Australia (WA) Localities 1 Council area Northam Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 6558 · Postcode 6562