Home Postcode finder SA Field Field postcode SA Field is a locality in South Australia covered by postcode 5265. Postcode 5265 State or territory South Australia (SA) Region Sa Subs Near 2 Add a free Field business listing Be the first listing in Field Common questionsWhat is the postcode for Field?Field, SA has the postcode 5265.What state is Field in?Field is in South Australia (SA).Does postcode 5265 cover more than one suburb?Yes. Postcode 5265 covers 2 localities, so the postcode alone does not identify Field. Browse other postcodes in South Australia, or widen the search to every Australian postcode.