Home Postcodes by state VIC 3740 Postcode 3740 3740 is the postcode for 3 localities in VIC: Buckland, Mount Buffalo and Porepunkah. Localities with postcode 3740BucklandVICMount BuffaloVICPorepunkahVIC Postcode 3740 State or territory Victoria (VIC) Localities 3 Council area Alpine Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 3739 · Postcode 3741