Home Postcodes by state WA 6073 Postcode 6073 6073 is the postcode for Mundaring, WA. Localities with postcode 6073MundaringWA Postcode 6073 State or territory Western Australia (WA) Localities 1 Council area Mundaring Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 6072 · Postcode 6074