Home Postcode finder WA Yandanooka Yandanooka postcode WA Yandanooka is a locality in Western Australia covered by postcode 6522. Postcode 6522 State or territory Western Australia (WA) Region Wa Subs 4 Coast Add a free Yandanooka business listing Be the first listing in Yandanooka Common questionsWhat is the postcode for Yandanooka?Yandanooka, WA has the postcode 6522.What state is Yandanooka in?Yandanooka is in Western Australia (WA).Does postcode 6522 cover more than one suburb?Yes. Postcode 6522 covers 10 localities, so the postcode alone does not identify Yandanooka. Browse other postcodes in Western Australia, or widen the search to every Australian postcode.