Home Postcode finder SA Giles Corner Giles Corner postcode SA Giles Corner is a locality in South Australia covered by postcode 5411. Postcode 5411 State or territory South Australia (SA) Region Sa Subs Near 1 Add a free Giles Corner business listing Be the first listing in Giles Corner Common questionsWhat is the postcode for Giles Corner?Giles Corner, SA has the postcode 5411.What state is Giles Corner in?Giles Corner is in South Australia (SA).Does postcode 5411 cover more than one suburb?Yes. Postcode 5411 covers 2 localities, so the postcode alone does not identify Giles Corner. Browse other postcodes in South Australia, or widen the search to every Australian postcode.