Home Postcode finder SA Reeves Plains Reeves Plains postcode SA Reeves Plains is a locality in South Australia covered by postcode 5502. Postcode 5502 State or territory South Australia (SA) Region Sa Subs Near 1 Add a free Reeves Plains business listing Be the first listing in Reeves Plains Common questionsWhat is the postcode for Reeves Plains?Reeves Plains, SA has the postcode 5502.What state is Reeves Plains in?Reeves Plains is in South Australia (SA).Does postcode 5502 cover more than one suburb?Yes. Postcode 5502 covers 6 localities, so the postcode alone does not identify Reeves Plains. Browse other postcodes in South Australia, or widen the search to every Australian postcode.