Home Postcode finder WA Yilliminning Yilliminning postcode WA Yilliminning is a locality in Western Australia covered by postcode 6312. Postcode 6312 State or territory Western Australia (WA) Region Wa Subs 2 Gsr Add a free Yilliminning business listing Be the first listing in Yilliminning Common questionsWhat is the postcode for Yilliminning?Yilliminning, WA has the postcode 6312.What state is Yilliminning in?Yilliminning is in Western Australia (WA).Does postcode 6312 cover more than one suburb?Yes. Postcode 6312 covers 9 localities, so the postcode alone does not identify Yilliminning. Browse other postcodes in Western Australia, or widen the search to every Australian postcode.