Home Postcode finder SA Benbournie Benbournie postcode SA Benbournie is a locality in South Australia covered by postcode 5453. Postcode 5453 State or territory South Australia (SA) Region Sa Subs Near 1 Add a free Benbournie business listing Be the first listing in Benbournie Common questionsWhat is the postcode for Benbournie?Benbournie, SA has the postcode 5453.What state is Benbournie in?Benbournie is in South Australia (SA).Does postcode 5453 cover more than one suburb?Yes. Postcode 5453 covers 16 localities, so the postcode alone does not identify Benbournie. Browse other postcodes in South Australia, or widen the search to every Australian postcode.