Home Postcode finder SA Roxby Downs Roxby Downs postcode SA Roxby Downs is a locality in South Australia covered by postcode 5725. Postcode 5725 State or territory South Australia (SA) Region SA Outer Suburbs Add a free Roxby Downs business listing More business listings in Roxby Downs Businesses in Roxby DownsRoxby Downs Area School7 Richardson Pl · 08 86710011St Barbara's Parish School78 Pioneer Drive · 08 86713207 Common questionsWhat is the postcode for Roxby Downs?Roxby Downs, SA has the postcode 5725.What state is Roxby Downs in?Roxby Downs is in South Australia (SA).Does postcode 5725 cover more than one suburb?Yes. Postcode 5725 covers 2 localities, so the postcode alone does not identify Roxby Downs. Browse other postcodes in South Australia, or widen the search to every Australian postcode.