Home Postcode finder WA Cheynes Cheynes postcode WA Cheynes is a locality in Western Australia covered by postcode 6328. Postcode 6328 State or territory Western Australia (WA) Region Wa Subs 2 Gsr Add a free Cheynes business listing Be the first listing in Cheynes Common questionsWhat is the postcode for Cheynes?Cheynes, WA has the postcode 6328.What state is Cheynes in?Cheynes is in Western Australia (WA).Does postcode 6328 cover more than one suburb?Yes. Postcode 6328 covers 8 localities, so the postcode alone does not identify Cheynes. Browse other postcodes in Western Australia, or widen the search to every Australian postcode.