Home Postcode finder SA Gawler West Gawler West postcode SA Gawler West 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 West business listing Be the first listing in Gawler West Common questionsWhat is the postcode for Gawler West?Gawler West, SA has the postcode 5118.What state is Gawler West in?Gawler West 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 West. Browse other postcodes in South Australia, or widen the search to every Australian postcode.