Home Postcode finder SA Ironbank Ironbank postcode SA Ironbank is a locality in South Australia covered by postcode 5153. Postcode 5153 State or territory South Australia (SA) Region Sa Subs Near 2 Add a free Ironbank business listing Be the first listing in Ironbank Common questionsWhat is the postcode for Ironbank?Ironbank, SA has the postcode 5153.What state is Ironbank in?Ironbank is in South Australia (SA).Does postcode 5153 cover more than one suburb?Yes. Postcode 5153 covers 13 localities, so the postcode alone does not identify Ironbank. Browse other postcodes in South Australia, or widen the search to every Australian postcode.