Home Postcodes by state WA 6223 Postcode 6223 6223 is the postcode for Benger, WA. Localities with postcode 6223BengerWA Postcode 6223 State or territory Western Australia (WA) Localities 1 Council area Harvey Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 6221 · Postcode 6224