Home Postcode finder SA Redbanks Redbanks postcode SA Redbanks is a locality in South Australia covered by postcode 5502. Postcode 5502 State or territory South Australia (SA) Region Sa Subs Near 1 Add a free Redbanks business listing Be the first listing in Redbanks Common questionsWhat is the postcode for Redbanks?Redbanks, SA has the postcode 5502.What state is Redbanks in?Redbanks is in South Australia (SA).Does postcode 5502 cover more than one suburb?Yes. Postcode 5502 covers 6 localities, so the postcode alone does not identify Redbanks. Browse other postcodes in South Australia, or widen the search to every Australian postcode.