Home Postcode finder WA Murdong Murdong postcode WA Murdong is a locality in Western Australia covered by postcode 6317. Postcode 6317 State or territory Western Australia (WA) Region Wa Subs 2 Gsr Add a free Murdong business listing Be the first listing in Murdong Common questionsWhat is the postcode for Murdong?Murdong, WA has the postcode 6317.What state is Murdong in?Murdong is in Western Australia (WA).Does postcode 6317 cover more than one suburb?Yes. Postcode 6317 covers 14 localities, so the postcode alone does not identify Murdong. Browse other postcodes in Western Australia, or widen the search to every Australian postcode.