Home Postcode finder SA Gawler East Gawler East postcode SA Gawler East is a locality in South Australia covered by postcode 5118. Postcode 5118 State or territory South Australia (SA) Region Sa Subs Near 1 Add a free Gawler East business listing Be the first listing in Gawler East Common questionsWhat is the postcode for Gawler East?Gawler East, SA has the postcode 5118.What state is Gawler East in?Gawler East is in South Australia (SA).Does postcode 5118 cover more than one suburb?Yes. Postcode 5118 covers 16 localities, so the postcode alone does not identify Gawler East. Browse other postcodes in South Australia, or widen the search to every Australian postcode.