Home Postcode finder WA Yornaning Yornaning postcode WA Yornaning is a locality in Western Australia covered by postcode 6311. Postcode 6311 State or territory Western Australia (WA) Region Wa Subs 2 Gsr Add a free Yornaning business listing Be the first listing in Yornaning Common questionsWhat is the postcode for Yornaning?Yornaning, WA has the postcode 6311.What state is Yornaning in?Yornaning is in Western Australia (WA).Does postcode 6311 cover more than one suburb?Yes. Postcode 6311 covers 8 localities, so the postcode alone does not identify Yornaning. Browse other postcodes in Western Australia, or widen the search to every Australian postcode.