Home Postcode finder SA James Well James Well postcode SA James Well is a locality in South Australia covered by postcode 5571. Postcode 5571 State or territory South Australia (SA) Region Sa Subs Near 1 Add a free James Well business listing Be the first listing in James Well Common questionsWhat is the postcode for James Well?James Well, SA has the postcode 5571.What state is James Well in?James Well is in South Australia (SA).Does postcode 5571 cover more than one suburb?Yes. Postcode 5571 covers 9 localities, so the postcode alone does not identify James Well. Browse other postcodes in South Australia, or widen the search to every Australian postcode.