Home Postcode finder TAS Mountain River Mountain River postcode TAS Mountain River is a locality in Tasmania covered by postcode 7109. Postcode 7109 State or territory Tasmania (TAS) Region Tasmania Add a free Mountain River business listing Be the first listing in Mountain River Common questionsWhat is the postcode for Mountain River?Mountain River, TAS has the postcode 7109.What state is Mountain River in?Mountain River 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 Mountain River. Browse other postcodes in Tasmania, or widen the search to every Australian postcode.