Home Postcode finder SA Halifax Street Halifax Street postcode SA Halifax Street is a locality in South Australia covered by postcode 5000. Postcode 5000 State or territory South Australia (SA) Region Adelaide Add a free Halifax Street business listing Be the first listing in Halifax Street Common questionsWhat is the postcode for Halifax Street?Halifax Street, SA has the postcode 5000.What state is Halifax Street in?Halifax Street is in South Australia (SA).Does postcode 5000 cover more than one suburb?Yes. Postcode 5000 covers 8 localities, so the postcode alone does not identify Halifax Street. Browse other postcodes in South Australia, or widen the search to every Australian postcode.