Home Postcode finder SA Backy Point Backy Point postcode SA Backy Point is a locality in South Australia covered by postcode 5600. Postcode 5600 State or territory South Australia (SA) Region SA Outer Suburbs Add a free Backy Point business listing Be the first listing in Backy Point Common questionsWhat is the postcode for Backy Point?Backy Point, SA has the postcode 5600.What state is Backy Point in?Backy Point is in South Australia (SA).Does postcode 5600 cover more than one suburb?Yes. Postcode 5600 covers 13 localities, so the postcode alone does not identify Backy Point. Browse other postcodes in South Australia, or widen the search to every Australian postcode.