Home Postcode finder SA Yilki Yilki postcode SA Yilki is a locality in South Australia covered by postcode 5211. Postcode 5211 State or territory South Australia (SA) Region Sa Subs Near 2 Add a free Yilki business listing Be the first listing in Yilki Common questionsWhat is the postcode for Yilki?Yilki, SA has the postcode 5211.What state is Yilki in?Yilki is in South Australia (SA).Does postcode 5211 cover more than one suburb?Yes. Postcode 5211 covers 12 localities, so the postcode alone does not identify Yilki. Browse other postcodes in South Australia, or widen the search to every Australian postcode.