Home Postcodes by state TAS 7175 Postcode 7175 7175 is the postcode for 2 localities in TAS: Bream Creek and Marion Bay. Localities with postcode 7175Bream CreekTASMarion BayTAS Postcode 7175 State or territory Tasmania (TAS) Localities 2 Council area Sorell Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 7174 · Postcode 7176