Home Postcode finder WA Cooljarloo Cooljarloo postcode WA Cooljarloo is a locality in Western Australia covered by postcode 6507. Postcode 6507 State or territory Western Australia (WA) Region Wa Subs 4 Coast Add a free Cooljarloo business listing Be the first listing in Cooljarloo Common questionsWhat is the postcode for Cooljarloo?Cooljarloo, WA has the postcode 6507.What state is Cooljarloo in?Cooljarloo is in Western Australia (WA).Does postcode 6507 cover more than one suburb?Yes. Postcode 6507 covers 6 localities, so the postcode alone does not identify Cooljarloo. Browse other postcodes in Western Australia, or widen the search to every Australian postcode.