Home Postcode finder WA Courtenay Courtenay postcode WA Courtenay is a locality in Western Australia covered by postcode 6288. Postcode 6288 State or territory Western Australia (WA) Region Wa Subs 3 Sth Rd Add a free Courtenay business listing Be the first listing in Courtenay Common questionsWhat is the postcode for Courtenay?Courtenay, WA has the postcode 6288.What state is Courtenay in?Courtenay is in Western Australia (WA).Does postcode 6288 cover more than one suburb?Yes. Postcode 6288 covers 7 localities, so the postcode alone does not identify Courtenay. Browse other postcodes in Western Australia, or widen the search to every Australian postcode.