Home Postcodes by state VIC 3178 Postcode 3178 3178 is the postcode for Rowville, VIC. Localities with postcode 3178RowvilleVIC Postcode 3178 State or territory Victoria (VIC) Localities 1 Council area Knox Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 3177 · Postcode 3179