Home Postcode finder WA Casuarina Casuarina postcode WA Casuarina is a locality in Western Australia covered by postcode 6167. Postcode 6167 State or territory Western Australia (WA) Region Wa Subs 3 Sth Rd Add a free Casuarina business listing Be the first listing in Casuarina Common questionsWhat is the postcode for Casuarina?Casuarina, WA has the postcode 6167.What state is Casuarina in?Casuarina is in Western Australia (WA).Does postcode 6167 cover more than one suburb?Yes. Postcode 6167 covers 13 localities, so the postcode alone does not identify Casuarina. Browse other postcodes in Western Australia, or widen the search to every Australian postcode.