Home Postcodes by state VIC 3820 Postcode 3820 3820 is the postcode for 3 localities in VIC: Bona Vista, Lillico and Warragul. Localities with postcode 3820Bona VistaVICLillicoVICWarragulVIC Postcode 3820 State or territory Victoria (VIC) Localities 3 Council area Baw Baw Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 3818 · Postcode 3821