Home Postcodes by state WA 6233 Postcode 6233 6233 is the postcode for 5 localities in WA: Australind, Binningup, Leschenault, Parkfield and Wellesley. Localities with postcode 6233AustralindWABinningupWALeschenaultWAParkfieldWAWellesleyWA Postcode 6233 State or territory Western Australia (WA) Localities 5 Council area Harvey Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 6232 · Postcode 6236