Home Postcode finder SA Smithfield West Smithfield West postcode SA Smithfield West is a locality in South Australia covered by postcode 5114. Postcode 5114 State or territory South Australia (SA) Region Sa Subs Near 1 Add a free Smithfield West business listing Be the first listing in Smithfield West Common questionsWhat is the postcode for Smithfield West?Smithfield West, SA has the postcode 5114.What state is Smithfield West in?Smithfield West is in South Australia (SA).Does postcode 5114 cover more than one suburb?Yes. Postcode 5114 covers 12 localities, so the postcode alone does not identify Smithfield West. Browse other postcodes in South Australia, or widen the search to every Australian postcode.