Home Postcodes by state TAS 7170 Postcode 7170 7170 is the postcode for 5 localities in TAS: Acton Park, Cambridge, Mount Rumney, Roches Beach and Seven Mile Beach. Localities with postcode 7170Acton ParkTASCambridgeTASMount RumneyTASRoches BeachTASSeven Mile BeachTAS Postcode 7170 State or territory Tasmania (TAS) Localities 5 Council area Clarence Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 7163 · Postcode 7171