Home Postcode finder SA Witchelina Witchelina postcode SA Witchelina 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 Witchelina business listing Be the first listing in Witchelina Common questionsWhat is the postcode for Witchelina?Witchelina, SA has the postcode 5731.What state is Witchelina in?Witchelina 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 Witchelina. Browse other postcodes in South Australia, or widen the search to every Australian postcode.