Home Postcode finder TAS Relbia Relbia postcode TAS Relbia is a locality in Tasmania covered by postcode 7258. Postcode 7258 State or territory Tasmania (TAS) Region Tasmania Add a free Relbia business listing Be the first listing in Relbia Common questionsWhat is the postcode for Relbia?Relbia, TAS has the postcode 7258.What state is Relbia in?Relbia is in Tasmania (TAS).Does postcode 7258 cover more than one suburb?Yes. Postcode 7258 covers 3 localities, so the postcode alone does not identify Relbia. Browse other postcodes in Tasmania, or widen the search to every Australian postcode.