Home Postcodes by state VIC 3280 Postcode 3280 3280 is the postcode for 4 localities in VIC: Dennington, Warrnambool, Warrnambool East and Warrnambool West. Localities with postcode 3280DenningtonVICWarrnamboolVICWarrnambool EastVICWarrnambool WestVIC Postcode 3280 State or territory Victoria (VIC) Localities 4 Council area Warrnambool Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 3279 · Postcode 3281