Home Postcodes by state WA 6051 Postcode 6051 6051 is the postcode for Maylands, WA. Localities with postcode 6051MaylandsWA Postcode 6051 State or territory Western Australia (WA) Localities 1 Council area Bayswater Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 6050 · Postcode 6052