Home Postcode finder SA North Moonta North Moonta postcode SA North Moonta is a locality in South Australia covered by postcode 5558. Postcode 5558 State or territory South Australia (SA) Region Sa Subs Near 1 Add a free North Moonta business listing Be the first listing in North Moonta Common questionsWhat is the postcode for North Moonta?North Moonta, SA has the postcode 5558.What state is North Moonta in?North Moonta is in South Australia (SA).Does postcode 5558 cover more than one suburb?Yes. Postcode 5558 covers 14 localities, so the postcode alone does not identify North Moonta. Browse other postcodes in South Australia, or widen the search to every Australian postcode.