Home Postcode finder TAS Tunnack Tunnack postcode TAS Tunnack is a locality in Tasmania covered by postcode 7120. Postcode 7120 State or territory Tasmania (TAS) Region Tasmania Add a free Tunnack business listing Be the first listing in Tunnack Common questionsWhat is the postcode for Tunnack?Tunnack, TAS has the postcode 7120.What state is Tunnack in?Tunnack 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 Tunnack. Browse other postcodes in Tasmania, or widen the search to every Australian postcode.