Home Postcodes by state WA 6022 Postcode 6022 6022 is the postcode for Hamersley, WA. Localities with postcode 6022HamersleyWA Postcode 6022 State or territory Western Australia (WA) Localities 1 Council area Stirling Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 6021 · Postcode 6023