Home Postcode finder WA Coolup Coolup postcode WA Coolup is a locality in Western Australia covered by postcode 6214. Postcode 6214 State or territory Western Australia (WA) Region Wa Subs 3 Sth Rd Add a free Coolup business listing Be the first listing in Coolup Common questionsWhat is the postcode for Coolup?Coolup, WA has the postcode 6214.What state is Coolup in?Coolup is in Western Australia (WA).Does postcode 6214 cover more than one suburb?Yes. Postcode 6214 covers 3 localities, so the postcode alone does not identify Coolup. Browse other postcodes in Western Australia, or widen the search to every Australian postcode.