Home Postcode finder WA Deepdene Deepdene postcode WA Deepdene is a locality in Western Australia covered by postcode 6290. Postcode 6290 State or territory Western Australia (WA) Region Wa Subs 3 Sth Rd Add a free Deepdene business listing Be the first listing in Deepdene Common questionsWhat is the postcode for Deepdene?Deepdene, WA has the postcode 6290.What state is Deepdene in?Deepdene is in Western Australia (WA).Does postcode 6290 cover more than one suburb?Yes. Postcode 6290 covers 6 localities, so the postcode alone does not identify Deepdene. Browse other postcodes in Western Australia, or widen the search to every Australian postcode.