Home Postcode finder QLD Cairdbeign Cairdbeign postcode QLD Cairdbeign is a locality in Queensland covered by postcode 4722. Postcode 4722 State or territory Queensland (QLD) Region Central QLD Add a free Cairdbeign business listing Be the first listing in Cairdbeign Common questionsWhat is the postcode for Cairdbeign?Cairdbeign, QLD has the postcode 4722.What state is Cairdbeign in?Cairdbeign is in Queensland (QLD).Does postcode 4722 cover more than one suburb?Yes. Postcode 4722 covers 7 localities, so the postcode alone does not identify Cairdbeign. Browse other postcodes in Queensland, or widen the search to every Australian postcode.