Home Postcodes by state VIC 3388 Postcode 3388 3388 is the postcode for 2 localities in VIC: Banyena and Rupanyup. Localities with postcode 3388BanyenaVICRupanyupVIC Postcode 3388 State or territory Victoria (VIC) Localities 2 Council area Northern Grampians; Yarriambiack Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 3387 · Postcode 3390