Home Postcodes by state WA 6475 Postcode 6475 6475 is the postcode for 7 localities in WA: Badgerin Rock, Booralaming, Dukin, Koorda, Lake Margarette, Mollerin and 1 more. Localities with postcode 6475Badgerin RockWABooralamingWADukinWAKoordaWALake MargaretteWAMollerinWANewcarlbeonWA Postcode 6475 State or territory Western Australia (WA) Localities 7 Council area Koorda Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 6473 · Postcode 6476