Home Postcode finder WA Canning Mills Canning Mills postcode WA Canning Mills is a locality in Western Australia covered by postcode 6111. Postcode 6111 State or territory Western Australia (WA) Region North West Suburbs Add a free Canning Mills business listing Be the first listing in Canning Mills Common questionsWhat is the postcode for Canning Mills?Canning Mills, WA has the postcode 6111.What state is Canning Mills in?Canning Mills is in Western Australia (WA).Does postcode 6111 cover more than one suburb?Yes. Postcode 6111 covers 8 localities, so the postcode alone does not identify Canning Mills. Browse other postcodes in Western Australia, or widen the search to every Australian postcode.