Home Postcodes by state WA 6063 Postcode 6063 6063 is the postcode for Beechboro, WA. Localities with postcode 6063BeechboroWA Postcode 6063 State or territory Western Australia (WA) Localities 1 Council area Swan Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 6062 · Postcode 6064