Home Postcodes by state VIC 3357 Postcode 3357 3357 is the postcode for Buninyong, VIC. Localities with postcode 3357BuninyongVIC Postcode 3357 State or territory Victoria (VIC) Localities 1 Council area Ballarat Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 3356 · Postcode 3360