Home Postcode finder SA Moana Moana postcode SA Moana is a locality in South Australia covered by postcode 5169. Postcode 5169 State or territory South Australia (SA) Region Adelaide Add a free Moana business listing Be the first listing in Moana Common questionsWhat is the postcode for Moana?Moana, SA has the postcode 5169.What state is Moana in?Moana is in South Australia (SA).Does postcode 5169 cover more than one suburb?Yes. Postcode 5169 covers 5 localities, so the postcode alone does not identify Moana. Browse other postcodes in South Australia, or widen the search to every Australian postcode.