Home Postcode finder TAS Casey Casey postcode TAS Casey is a locality in Tasmania covered by postcode 7151. Postcode 7151 State or territory Tasmania (TAS) Region Tasmania Add a free Casey business listing Be the first listing in Casey Common questionsWhat is the postcode for Casey?Casey, TAS has the postcode 7151.What state is Casey in?Casey is in Tasmania (TAS).Does postcode 7151 cover more than one suburb?Yes. Postcode 7151 covers 5 localities, so the postcode alone does not identify Casey. Browse other postcodes in Tasmania, or widen the search to every Australian postcode.