Home Postcode finder SA Koolunga Koolunga postcode SA Koolunga is a locality in South Australia covered by postcode 5464. Postcode 5464 State or territory South Australia (SA) Region Sa Subs Near 1 Add a free Koolunga business listing More business listings in Koolunga Businesses in KoolungaKoolunga Primary SchoolValley Rd · 08 88466052 Common questionsWhat is the postcode for Koolunga?Koolunga, SA has the postcode 5464.What state is Koolunga in?Koolunga is in South Australia (SA).Does postcode 5464 cover more than one suburb?Yes. Postcode 5464 covers 8 localities, so the postcode alone does not identify Koolunga. Browse other postcodes in South Australia, or widen the search to every Australian postcode.