Home Postcode finder SA Struan Struan postcode SA Struan is a locality in South Australia covered by postcode 5271. Postcode 5271 State or territory South Australia (SA) Region SA Outer Suburbs Add a free Struan business listing Be the first listing in Struan Common questionsWhat is the postcode for Struan?Struan, SA has the postcode 5271.What state is Struan in?Struan is in South Australia (SA).Does postcode 5271 cover more than one suburb?Yes. Postcode 5271 covers 18 localities, so the postcode alone does not identify Struan. Browse other postcodes in South Australia, or widen the search to every Australian postcode.