Home Postcode finder WA Muresk Muresk postcode WA Muresk is a locality in Western Australia covered by postcode 6401. Postcode 6401 State or territory Western Australia (WA) Region Wa Subs 1 G Flds Add a free Muresk business listing Be the first listing in Muresk Common questionsWhat is the postcode for Muresk?Muresk, WA has the postcode 6401.What state is Muresk in?Muresk is in Western Australia (WA).Does postcode 6401 cover more than one suburb?Yes. Postcode 6401 covers 18 localities, so the postcode alone does not identify Muresk. Browse other postcodes in Western Australia, or widen the search to every Australian postcode.