Home Postcode finder SA Kringin Kringin postcode SA Kringin is a locality in South Australia covered by postcode 5304. Postcode 5304 State or territory South Australia (SA) Region Sa Subs Near 2 Add a free Kringin business listing Be the first listing in Kringin Common questionsWhat is the postcode for Kringin?Kringin, SA has the postcode 5304.What state is Kringin in?Kringin is in South Australia (SA).Does postcode 5304 cover more than one suburb?Yes. Postcode 5304 covers 3 localities, so the postcode alone does not identify Kringin. Browse other postcodes in South Australia, or widen the search to every Australian postcode.