Home Postcodes by state WA 6232 Postcode 6232 6232 is the postcode for 2 localities in WA: Eaton and Millbridge. Localities with postcode 6232EatonWAMillbridgeWA Postcode 6232 State or territory Western Australia (WA) Localities 2 Council area Dardanup Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 6230 · Postcode 6233