Home Postcodes by state TAS 7305 Postcode 7305 7305 is the postcode for 3 localities in TAS: Merseylea, Railton and Sunnyside. Localities with postcode 7305MerseyleaTASRailtonTASSunnysideTAS Postcode 7305 State or territory Tasmania (TAS) Localities 3 Council area Mainly Kentish, partly Latrobe; Kentish Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 7304 · Postcode 7306