Home Postcode finder SA Westall Westall postcode SA Westall is a locality in South Australia covered by postcode 5680. Postcode 5680 State or territory South Australia (SA) Region SA Outer Suburbs Add a free Westall business listing Be the first listing in Westall Common questionsWhat is the postcode for Westall?Westall, SA has the postcode 5680.What state is Westall in?Westall is in South Australia (SA).Does postcode 5680 cover more than one suburb?Yes. Postcode 5680 covers 20 localities, so the postcode alone does not identify Westall. Browse other postcodes in South Australia, or widen the search to every Australian postcode.