Home Postcode finder WA West Ballidu West Ballidu postcode WA West 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 West Ballidu business listing Be the first listing in West Ballidu Common questionsWhat is the postcode for West Ballidu?West Ballidu, WA has the postcode 6606.What state is West Ballidu in?West 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 West Ballidu. Browse other postcodes in Western Australia, or widen the search to every Australian postcode.