Home Postcode finder WA Broke Broke postcode WA Broke is a locality in Western Australia covered by postcode 6398. Postcode 6398 State or territory Western Australia (WA) Region Wa Subs 2 Gsr Add a free Broke business listing Be the first listing in Broke Common questionsWhat is the postcode for Broke?Broke, WA has the postcode 6398.What state is Broke in?Broke is in Western Australia (WA).Does postcode 6398 cover more than one suburb?Yes. Postcode 6398 covers 3 localities, so the postcode alone does not identify Broke. Browse other postcodes in Western Australia, or widen the search to every Australian postcode.