Home Postcode finder TAS Ida Bay Ida Bay postcode TAS Ida Bay is a locality in Tasmania covered by postcode 7109. Postcode 7109 State or territory Tasmania (TAS) Region Tasmania Add a free Ida Bay business listing Be the first listing in Ida Bay Common questionsWhat is the postcode for Ida Bay?Ida Bay, TAS has the postcode 7109.What state is Ida Bay in?Ida Bay is in Tasmania (TAS).Does postcode 7109 cover more than one suburb?Yes. Postcode 7109 covers 27 localities, so the postcode alone does not identify Ida Bay. Browse other postcodes in Tasmania, or widen the search to every Australian postcode.