Home Postcode finder SA Sanderston Sanderston postcode SA Sanderston is a locality in South Australia covered by postcode 5237. Postcode 5237 State or territory South Australia (SA) Region Sa Subs Near 2 Add a free Sanderston business listing Be the first listing in Sanderston Common questionsWhat is the postcode for Sanderston?Sanderston, SA has the postcode 5237.What state is Sanderston in?Sanderston is in South Australia (SA).Does postcode 5237 cover more than one suburb?Yes. Postcode 5237 covers 4 localities, so the postcode alone does not identify Sanderston. Browse other postcodes in South Australia, or widen the search to every Australian postcode.