Home Postcode finder WA Finucane Finucane postcode WA Finucane is a locality in Western Australia covered by postcode 6722. Postcode 6722 State or territory Western Australia (WA) Region North West Suburbs Add a free Finucane business listing Be the first listing in Finucane Common questionsWhat is the postcode for Finucane?Finucane, WA has the postcode 6722.What state is Finucane in?Finucane is in Western Australia (WA).Does postcode 6722 cover more than one suburb?Yes. Postcode 6722 covers 5 localities, so the postcode alone does not identify Finucane. Browse other postcodes in Western Australia, or widen the search to every Australian postcode.