Home Postcode finder WA Reedy Reedy postcode WA Reedy is a locality in Western Australia covered by postcode 6640. Postcode 6640 State or territory Western Australia (WA) Region North West Suburbs Add a free Reedy business listing Be the first listing in Reedy Common questionsWhat is the postcode for Reedy?Reedy, WA has the postcode 6640.What state is Reedy in?Reedy is in Western Australia (WA).Does postcode 6640 cover more than one suburb?Yes. Postcode 6640 covers 5 localities, so the postcode alone does not identify Reedy. Browse other postcodes in Western Australia, or widen the search to every Australian postcode.