Home Postcode finder SA Rhynie Rhynie postcode SA Rhynie is a locality in South Australia covered by postcode 5412. Postcode 5412 State or territory South Australia (SA) Region Sa Subs Near 1 Add a free Rhynie business listing Be the first listing in Rhynie Common questionsWhat is the postcode for Rhynie?Rhynie, SA has the postcode 5412.What state is Rhynie in?Rhynie is in South Australia (SA).Does postcode 5412 cover more than one suburb?Yes. Postcode 5412 covers 4 localities, so the postcode alone does not identify Rhynie. Browse other postcodes in South Australia, or widen the search to every Australian postcode.