Home Postcode finder TAS Triabunna Triabunna postcode TAS Triabunna is a locality in Tasmania covered by postcode 7190. Postcode 7190 State or territory Tasmania (TAS) Region Tasmania Add a free Triabunna business listing More business listings in Triabunna Businesses in TriabunnaTriabunna District High School15 Melbourne St · 03 62573199 Common questionsWhat is the postcode for Triabunna?Triabunna, TAS has the postcode 7190.What state is Triabunna in?Triabunna is in Tasmania (TAS).Does postcode 7190 cover more than one suburb?Yes. Postcode 7190 covers 13 localities, so the postcode alone does not identify Triabunna. Browse other postcodes in Tasmania, or widen the search to every Australian postcode.