Home Postcode finder WA Parker Range Parker Range postcode WA Parker Range is a locality in Western Australia covered by postcode 6426. Postcode 6426 State or territory Western Australia (WA) Region Wa Subs 1 G Flds Add a free Parker Range business listing Be the first listing in Parker Range Common questionsWhat is the postcode for Parker Range?Parker Range, WA has the postcode 6426.What state is Parker Range in?Parker Range is in Western Australia (WA).Does postcode 6426 cover more than one suburb?Yes. Postcode 6426 covers 14 localities, so the postcode alone does not identify Parker Range. Browse other postcodes in Western Australia, or widen the search to every Australian postcode.