Home Postcodes by state VIC 3929 Postcode 3929 3929 is the postcode for Flinders, VIC. Localities with postcode 3929FlindersVIC Postcode 3929 State or territory Victoria (VIC) Localities 1 Council area Mornington Peninsula Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 3928 · Postcode 3930