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