Home Postcode finder SA Flaxley Flaxley postcode SA Flaxley is a locality in South Australia covered by postcode 5153. Postcode 5153 State or territory South Australia (SA) Region Sa Subs Near 2 Add a free Flaxley business listing Be the first listing in Flaxley Common questionsWhat is the postcode for Flaxley?Flaxley, SA has the postcode 5153.What state is Flaxley in?Flaxley is in South Australia (SA).Does postcode 5153 cover more than one suburb?Yes. Postcode 5153 covers 13 localities, so the postcode alone does not identify Flaxley. Browse other postcodes in South Australia, or widen the search to every Australian postcode.