Home Postcode finder TAS Alonnah Alonnah postcode TAS Alonnah is a locality in Tasmania covered by postcode 7150. Postcode 7150 State or territory Tasmania (TAS) Region Tasmania Add a free Alonnah business listing Be the first listing in Alonnah Common questionsWhat is the postcode for Alonnah?Alonnah, TAS has the postcode 7150.What state is Alonnah in?Alonnah is in Tasmania (TAS).Does postcode 7150 cover more than one suburb?Yes. Postcode 7150 covers 19 localities, so the postcode alone does not identify Alonnah. Browse other postcodes in Tasmania, or widen the search to every Australian postcode.