Home Postcode finder SA Aldinga Beach Aldinga Beach postcode SA Aldinga Beach is a locality in South Australia covered by postcode 5173. Postcode 5173 State or territory South Australia (SA) Region Adelaide Add a free Aldinga Beach business listing More business listings in Aldinga Beach Businesses in Aldinga BeachAldinga Home ImprovementsLot 110 · 0885577144Aldinga Junior Primary School58 Quinliven Rd · 08 85565060Aldinga Primary School58 Quinliven Rd · 08 85565060 Common questionsWhat is the postcode for Aldinga Beach?Aldinga Beach, SA has the postcode 5173.What state is Aldinga Beach in?Aldinga Beach is in South Australia (SA).Does postcode 5173 cover more than one suburb?Yes. Postcode 5173 covers 4 localities, so the postcode alone does not identify Aldinga Beach. Browse other postcodes in South Australia, or widen the search to every Australian postcode.