Home Postcodes by state WA 6226 Postcode 6226 6226 is the postcode for Roelands, WA. Localities with postcode 6226RoelandsWA Postcode 6226 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 6225 · Postcode 6227