Home Postcode finder WA Cataby Cataby postcode WA Cataby 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 Cataby business listing Be the first listing in Cataby Common questionsWhat is the postcode for Cataby?Cataby, WA has the postcode 6507.What state is Cataby in?Cataby 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 Cataby. Browse other postcodes in Western Australia, or widen the search to every Australian postcode.