Home Postcode finder SA Aldinga Aldinga postcode SA Aldinga is a locality in South Australia covered by postcode 5173. Postcode 5173 State or territory South Australia (SA) Region Adelaide Add a free Aldinga business listing More business listings in Aldinga Businesses in AldingaGalilee Catholic SchoolCnr Quinliven & How Rds · 08 85579000Marg HobbyMarg Hobby Aldinga Beach SA · 61 407 186 011Marg HobbyMarg Hobby · 0407186011 Common questionsWhat is the postcode for Aldinga?Aldinga, SA has the postcode 5173.What state is Aldinga in?Aldinga 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. Browse other postcodes in South Australia, or widen the search to every Australian postcode.