Home Postcode finder WA Tardun Tardun postcode WA Tardun is a locality in Western Australia covered by postcode 6628. Postcode 6628 State or territory Western Australia (WA) Region Wa Subs 4 Coast Add a free Tardun business listing Be the first listing in Tardun Common questionsWhat is the postcode for Tardun?Tardun, WA has the postcode 6628.What state is Tardun in?Tardun is in Western Australia (WA).Does postcode 6628 cover more than one suburb?No. Postcode 6628 covers Tardun only, which is unusual - most Australian postcodes cover several localities. Browse other postcodes in Western Australia, or widen the search to every Australian postcode.