Home Postcode finder WA East Ballidu East Ballidu postcode WA East Ballidu is a locality in Western Australia covered by postcode 6606. Postcode 6606 State or territory Western Australia (WA) Region Wa Subs 4 Coast Add a free East Ballidu business listing Be the first listing in East Ballidu Common questionsWhat is the postcode for East Ballidu?East Ballidu, WA has the postcode 6606.What state is East Ballidu in?East Ballidu is in Western Australia (WA).Does postcode 6606 cover more than one suburb?Yes. Postcode 6606 covers 3 localities, so the postcode alone does not identify East Ballidu. Browse other postcodes in Western Australia, or widen the search to every Australian postcode.