Home Postcodes by state WA 6466 Postcode 6466 6466 is the postcode for Cadoux, WA. Localities with postcode 6466CadouxWA Postcode 6466 State or territory Western Australia (WA) Localities 1 Council area Wongan-Ballidu Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 6465 · Postcode 6467