Home Postcode finder QLD Coolbie Coolbie postcode QLD Coolbie is a locality in Queensland covered by postcode 4850. Postcode 4850 State or territory Queensland (QLD) Region North QLD Add a free Coolbie business listing Be the first listing in Coolbie Common questionsWhat is the postcode for Coolbie?Coolbie, QLD has the postcode 4850.What state is Coolbie in?Coolbie is in Queensland (QLD).Does postcode 4850 cover more than one suburb?Yes. Postcode 4850 covers 34 localities, so the postcode alone does not identify Coolbie. Browse other postcodes in Queensland, or widen the search to every Australian postcode.