Home Postcodes by state VIC 3531 Postcode 3531 3531 is the postcode for 2 localities in VIC: Berriwillock and Boigbeat. Localities with postcode 3531BerriwillockVICBoigbeatVIC Postcode 3531 State or territory Victoria (VIC) Localities 2 Council area Buloke Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 3530 · Postcode 3533