Home Postcode finder SA Stockwell Stockwell postcode SA Stockwell is a locality in South Australia covered by postcode 5355. Postcode 5355 State or territory South Australia (SA) Region Sa Subs Near 1 Add a free Stockwell business listing Be the first listing in Stockwell Common questionsWhat is the postcode for Stockwell?Stockwell, SA has the postcode 5355.What state is Stockwell in?Stockwell is in South Australia (SA).Does postcode 5355 cover more than one suburb?Yes. Postcode 5355 covers 8 localities, so the postcode alone does not identify Stockwell. Browse other postcodes in South Australia, or widen the search to every Australian postcode.