Home Postcode finder SA Orroroo Orroroo postcode SA Orroroo is a locality in South Australia covered by postcode 5431. Postcode 5431 State or territory South Australia (SA) Region SA Outer Suburbs Add a free Orroroo business listing More business listings in Orroroo Businesses in OrrorooOrroroo Area School2 West Terrace · 08 86581100 Common questionsWhat is the postcode for Orroroo?Orroroo, SA has the postcode 5431.What state is Orroroo in?Orroroo is in South Australia (SA).Does postcode 5431 cover more than one suburb?Yes. Postcode 5431 covers 14 localities, so the postcode alone does not identify Orroroo. Browse other postcodes in South Australia, or widen the search to every Australian postcode.