Home Postcode finder WA East Popanyinning East Popanyinning postcode WA East 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 East Popanyinning business listing Be the first listing in East Popanyinning Common questionsWhat is the postcode for East Popanyinning?East Popanyinning, WA has the postcode 6309.What state is East Popanyinning in?East 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 East Popanyinning. Browse other postcodes in Western Australia, or widen the search to every Australian postcode.