Home Postcode finder SA Old Noarlunga Old Noarlunga postcode SA Old Noarlunga is a locality in South Australia covered by postcode 5168. Postcode 5168 State or territory South Australia (SA) Region Adelaide Add a free Old Noarlunga business listing More business listings in Old Noarlunga Businesses in Old NoarlungaNoarlunga Primary SchoolPatapinda Rd · 08 83862093 Common questionsWhat is the postcode for Old Noarlunga?Old Noarlunga, SA has the postcode 5168.What state is Old Noarlunga in?Old Noarlunga is in South Australia (SA).Does postcode 5168 cover more than one suburb?Yes. Postcode 5168 covers 3 localities, so the postcode alone does not identify Old Noarlunga. Browse other postcodes in South Australia, or widen the search to every Australian postcode.