Home Postcode finder SA Buckland Park Buckland Park postcode SA Buckland Park is a locality in South Australia covered by postcode 5120. Postcode 5120 State or territory South Australia (SA) Region Sa Subs Near 1 Add a free Buckland Park business listing Be the first listing in Buckland Park Common questionsWhat is the postcode for Buckland Park?Buckland Park, SA has the postcode 5120.What state is Buckland Park in?Buckland Park is in South Australia (SA).Does postcode 5120 cover more than one suburb?Yes. Postcode 5120 covers 2 localities, so the postcode alone does not identify Buckland Park. Browse other postcodes in South Australia, or widen the search to every Australian postcode.