Home Postcodes by state VIC 3300 Postcode 3300 3300 is the postcode for 2 localities in VIC: Byaduk North and Hamilton. Localities with postcode 3300Byaduk NorthVICHamiltonVIC Postcode 3300 State or territory Victoria (VIC) Localities 2 Council area Southern Grampians Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 3294 · Postcode 3301