Home Postcode finder WA Popanyinning Popanyinning postcode WA Popanyinning is a locality in Western Australia covered by postcode 6309. Postcode 6309 State or territory Western Australia (WA) Region Wa Subs 2 Gsr Add a free Popanyinning business listing Be the first listing in Popanyinning Common questionsWhat is the postcode for Popanyinning?Popanyinning, WA has the postcode 6309.What state is Popanyinning in?Popanyinning is in Western Australia (WA).Does postcode 6309 cover more than one suburb?Yes. Postcode 6309 covers 4 localities, so the postcode alone does not identify Popanyinning. Browse other postcodes in Western Australia, or widen the search to every Australian postcode.