Home Postcodes by state TAS 7054 Postcode 7054 7054 is the postcode for 13 localities in TAS: Barretta, Coningham, Electrona, Fern Tree, Howden, Leslie Vale and 7 more. Localities with postcode 7054BarrettaTASConinghamTASElectronaTASFern TreeTASHowdenTASLeslie ValeTASLower SnugTASMargateTASNeikaTASRidgewayTASSnugTASTinderboxTASWellington ParkTAS Postcode 7054 State or territory Tasmania (TAS) Localities 13 Council area Kingborough; Hobart; Mainly Derwent Valley, partly Glenorchy Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 7053 · Postcode 7055