Home Postcode finder TAS Opossum Bay Opossum Bay postcode TAS Opossum Bay is a locality in Tasmania covered by postcode 7023. Postcode 7023 State or territory Tasmania (TAS) Region Tasmania Add a free Opossum Bay business listing Be the first listing in Opossum Bay Common questionsWhat is the postcode for Opossum Bay?Opossum Bay, TAS has the postcode 7023.What state is Opossum Bay in?Opossum Bay is in Tasmania (TAS).Does postcode 7023 cover more than one suburb?No. Postcode 7023 covers Opossum Bay only, which is unusual - most Australian postcodes cover several localities. Browse other postcodes in Tasmania, or widen the search to every Australian postcode.