Home Postcode finder SA Haslam Haslam postcode SA Haslam 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 Haslam business listing Be the first listing in Haslam Common questionsWhat is the postcode for Haslam?Haslam, SA has the postcode 5680.What state is Haslam in?Haslam 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 Haslam. Browse other postcodes in South Australia, or widen the search to every Australian postcode.