Home Postcode finder WA Bornholm Bornholm postcode WA Bornholm is a locality in Western Australia covered by postcode 6330. Postcode 6330 State or territory Western Australia (WA) Region Wa Subs 2 Gsr Add a free Bornholm business listing Be the first listing in Bornholm Common questionsWhat is the postcode for Bornholm?Bornholm, WA has the postcode 6330.What state is Bornholm in?Bornholm is in Western Australia (WA).Does postcode 6330 cover more than one suburb?Yes. Postcode 6330 covers 50 localities, so the postcode alone does not identify Bornholm. Browse other postcodes in Western Australia, or widen the search to every Australian postcode.