Home Postcode finder WA East Lyons River East Lyons River postcode WA East Lyons River is a locality in Western Australia covered by postcode 6705. Postcode 6705 State or territory Western Australia (WA) Region North West Suburbs Add a free East Lyons River business listing Be the first listing in East Lyons River Common questionsWhat is the postcode for East Lyons River?East Lyons River, WA has the postcode 6705.What state is East Lyons River in?East Lyons River is in Western Australia (WA).Does postcode 6705 cover more than one suburb?Yes. Postcode 6705 covers 4 localities, so the postcode alone does not identify East Lyons River. Browse other postcodes in Western Australia, or widen the search to every Australian postcode.