Home Postcodes by state VIC 3478 Postcode 3478 3478 is the postcode for 8 localities in VIC: Dooboobetic, Medlyn, Moonambel, Percydale, St Arnaud, Tanwood and 2 more. Localities with postcode 3478DooboobeticVICMedlynVICMoonambelVICPercydaleVICSt ArnaudVICTanwoodVICWarrenmangVICYawong HillsVIC Postcode 3478 State or territory Victoria (VIC) Localities 8 Council area Buloke; Pyrenees; Northern Grampians Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 3477 · Postcode 3480