Home Postcode finder SA Moppa Moppa postcode SA Moppa 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 Moppa business listing Be the first listing in Moppa Common questionsWhat is the postcode for Moppa?Moppa, SA has the postcode 5355.What state is Moppa in?Moppa 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 Moppa. Browse other postcodes in South Australia, or widen the search to every Australian postcode.