Home Postcode finder TAS Cairns Bay Cairns Bay postcode TAS Cairns Bay is a locality in Tasmania covered by postcode 7116. Postcode 7116 State or territory Tasmania (TAS) Region Tasmania Add a free Cairns Bay business listing Be the first listing in Cairns Bay Common questionsWhat is the postcode for Cairns Bay?Cairns Bay, TAS has the postcode 7116.What state is Cairns Bay in?Cairns Bay is in Tasmania (TAS).Does postcode 7116 cover more than one suburb?Yes. Postcode 7116 covers 8 localities, so the postcode alone does not identify Cairns Bay. Browse other postcodes in Tasmania, or widen the search to every Australian postcode.