Home Postcode finder SA Myponga Beach Myponga Beach postcode SA Myponga Beach is a locality in South Australia covered by postcode 5202. Postcode 5202 State or territory South Australia (SA) Region Adelaide Add a free Myponga Beach business listing Be the first listing in Myponga Beach Common questionsWhat is the postcode for Myponga Beach?Myponga Beach, SA has the postcode 5202.What state is Myponga Beach in?Myponga Beach is in South Australia (SA).Does postcode 5202 cover more than one suburb?Yes. Postcode 5202 covers 3 localities, so the postcode alone does not identify Myponga Beach. Browse other postcodes in South Australia, or widen the search to every Australian postcode.