Home Postcodes by state VIC 3946 Postcode 3946 3946 is the postcode for Bena, VIC. Localities with postcode 3946BenaVIC Postcode 3946 State or territory Victoria (VIC) Localities 1 Council area South Gippsland Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 3945 · Postcode 3950