Home Postcode finder WA Yellowdine Yellowdine postcode WA Yellowdine is a locality in Western Australia covered by postcode 6426. Postcode 6426 State or territory Western Australia (WA) Region Wa Subs 1 G Flds Add a free Yellowdine business listing Be the first listing in Yellowdine Common questionsWhat is the postcode for Yellowdine?Yellowdine, WA has the postcode 6426.What state is Yellowdine in?Yellowdine is in Western Australia (WA).Does postcode 6426 cover more than one suburb?Yes. Postcode 6426 covers 14 localities, so the postcode alone does not identify Yellowdine. Browse other postcodes in Western Australia, or widen the search to every Australian postcode.