Home Postcodes by state VIC 3956 Postcode 3956 3956 is the postcode for 9 localities in VIC: Dumbalk, Dumbalk North, Meeniyan, Middle Tarwin, Tarwin, Tarwin Lower and 3 more. Localities with postcode 3956DumbalkVICDumbalk NorthVICMeeniyanVICMiddle TarwinVICTarwinVICTarwin LowerVICVenus BayVICWalkervilleVICWalkerville SouthVIC Postcode 3956 State or territory Victoria (VIC) Localities 9 Council area South Gippsland Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 3954 · Postcode 3957