Home Postcode finder TAS Rhyndaston Rhyndaston postcode TAS Rhyndaston is a locality in Tasmania covered by postcode 7120. Postcode 7120 State or territory Tasmania (TAS) Region Tasmania Add a free Rhyndaston business listing Be the first listing in Rhyndaston Common questionsWhat is the postcode for Rhyndaston?Rhyndaston, TAS has the postcode 7120.What state is Rhyndaston in?Rhyndaston is in Tasmania (TAS).Does postcode 7120 cover more than one suburb?Yes. Postcode 7120 covers 19 localities, so the postcode alone does not identify Rhyndaston. Browse other postcodes in Tasmania, or widen the search to every Australian postcode.