Home Postcode finder WA Clackline Clackline postcode WA Clackline is a locality in Western Australia covered by postcode 6564. Postcode 6564 State or territory Western Australia (WA) Region Wa Subs 4 Coast Add a free Clackline business listing Be the first listing in Clackline Common questionsWhat is the postcode for Clackline?Clackline, WA has the postcode 6564.What state is Clackline in?Clackline is in Western Australia (WA).Does postcode 6564 cover more than one suburb?No. Postcode 6564 covers Clackline only, which is unusual - most Australian postcodes cover several localities. Browse other postcodes in Western Australia, or widen the search to every Australian postcode.