Home Postcode finder WA Barbalin Barbalin postcode WA Barbalin is a locality in Western Australia covered by postcode 6479. Postcode 6479 State or territory Western Australia (WA) Region Wa Subs 1 G Flds Add a free Barbalin business listing Be the first listing in Barbalin Common questionsWhat is the postcode for Barbalin?Barbalin, WA has the postcode 6479.What state is Barbalin in?Barbalin is in Western Australia (WA).Does postcode 6479 cover more than one suburb?Yes. Postcode 6479 covers 9 localities, so the postcode alone does not identify Barbalin. Browse other postcodes in Western Australia, or widen the search to every Australian postcode.