Home Postcode finder SA Coopers Creek Coopers Creek postcode SA Coopers Creek is a locality in South Australia covered by postcode 5731. Postcode 5731 State or territory South Australia (SA) Region SA Outer Suburbs Add a free Coopers Creek business listing Be the first listing in Coopers Creek Common questionsWhat is the postcode for Coopers Creek?Coopers Creek, SA has the postcode 5731.What state is Coopers Creek in?Coopers Creek is in South Australia (SA).Does postcode 5731 cover more than one suburb?Yes. Postcode 5731 covers 9 localities, so the postcode alone does not identify Coopers Creek. Browse other postcodes in South Australia, or widen the search to every Australian postcode.