Home Postcode finder SA De Mole River De Mole River postcode SA De Mole River is a locality in South Australia covered by postcode 5223. Postcode 5223 State or territory South Australia (SA) Region Sa Subs Near 2 Add a free De Mole River business listing Be the first listing in De Mole River Common questionsWhat is the postcode for De Mole River?De Mole River, SA has the postcode 5223.What state is De Mole River in?De Mole River is in South Australia (SA).Does postcode 5223 cover more than one suburb?Yes. Postcode 5223 covers 30 localities, so the postcode alone does not identify De Mole River. Browse other postcodes in South Australia, or widen the search to every Australian postcode.