Home Postcodes by state WA 6041 Postcode 6041 6041 is the postcode for 5 localities in WA: Caraban, Gabbadah, Guilderton, Wilbinga and Woodridge. Localities with postcode 6041CarabanWAGabbadahWAGuildertonWAWilbingaWAWoodridgeWA Postcode 6041 State or territory Western Australia (WA) Localities 5 Council area Gingin Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 6038 · Postcode 6042