Home Postcodes by state WA 6082 Postcode 6082 6082 is the postcode for 2 localities in WA: Bailup and Mount Helena. Localities with postcode 6082BailupWAMount HelenaWA Postcode 6082 State or territory Western Australia (WA) Localities 2 Council area Mundaring Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 6081 · Postcode 6083