Home Postcode finder SA Port Giles Port Giles postcode SA Port Giles is a locality in South Australia covered by postcode 5582. Postcode 5582 State or territory South Australia (SA) Region Sa Subs Near 1 Add a free Port Giles business listing Be the first listing in Port Giles Common questionsWhat is the postcode for Port Giles?Port Giles, SA has the postcode 5582.What state is Port Giles in?Port Giles is in South Australia (SA).Does postcode 5582 cover more than one suburb?Yes. Postcode 5582 covers 2 localities, so the postcode alone does not identify Port Giles. Browse other postcodes in South Australia, or widen the search to every Australian postcode.