Home Postcode finder SA Tarcowie Tarcowie postcode SA Tarcowie 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 Tarcowie business listing Be the first listing in Tarcowie Common questionsWhat is the postcode for Tarcowie?Tarcowie, SA has the postcode 5431.What state is Tarcowie in?Tarcowie 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 Tarcowie. Browse other postcodes in South Australia, or widen the search to every Australian postcode.