Home Postcode finder WA Yilkari Yilkari postcode WA Yilkari is a locality in Western Australia covered by postcode 6430. Postcode 6430 State or territory Western Australia (WA) Region Wa Subs 1 G Flds Add a free Yilkari business listing Be the first listing in Yilkari Common questionsWhat is the postcode for Yilkari?Yilkari, WA has the postcode 6430.What state is Yilkari in?Yilkari is in Western Australia (WA).Does postcode 6430 cover more than one suburb?Yes. Postcode 6430 covers 14 localities, so the postcode alone does not identify Yilkari. Browse other postcodes in Western Australia, or widen the search to every Australian postcode.