Home Postcodes by state VIC 3928 Postcode 3928 3928 is the postcode for Main Ridge, VIC. Localities with postcode 3928Main RidgeVIC Postcode 3928 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 3927 · Postcode 3929