Home Postcodes by state WA 6147 Postcode 6147 6147 is the postcode for 3 localities in WA: Langford, Lynwood and Parkwood. Localities with postcode 6147LangfordWALynwoodWAParkwoodWA Postcode 6147 State or territory Western Australia (WA) Localities 3 Council area Gosnells; Canning Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 6126 · Postcode 6148