Home Postcode finder SA Sevenhill Sevenhill postcode SA Sevenhill 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 Sevenhill business listing Be the first listing in Sevenhill Common questionsWhat is the postcode for Sevenhill?Sevenhill, SA has the postcode 5453.What state is Sevenhill in?Sevenhill 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 Sevenhill. Browse other postcodes in South Australia, or widen the search to every Australian postcode.