Home Postcodes by state WA 6043 Postcode 6043 6043 is the postcode for 2 localities in WA: Breton Bay and Ledge Point. Localities with postcode 6043Breton BayWALedge PointWA Postcode 6043 State or territory Western Australia (WA) Localities 2 Council area Gingin Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 6042 · Postcode 6044