Home Postcodes by state VIC 3542 Postcode 3542 3542 is the postcode for 3 localities in VIC: Cokum, Lalbert and Tittybong. Localities with postcode 3542CokumVICLalbertVICTittybongVIC Postcode 3542 State or territory Victoria (VIC) Localities 3 Council area Gannawarra Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 3540 · Postcode 3544