Home Postcode finder QLD East Cooyar East Cooyar postcode QLD East Cooyar is a locality in Queensland covered by postcode 4353. Postcode 4353 State or territory Queensland (QLD) Region Toowoomba Region Add a free East Cooyar business listing Be the first listing in East Cooyar Common questionsWhat is the postcode for East Cooyar?East Cooyar, QLD has the postcode 4353.What state is East Cooyar in?East Cooyar is in Queensland (QLD).Does postcode 4353 cover more than one suburb?Yes. Postcode 4353 covers 3 localities, so the postcode alone does not identify East Cooyar. Browse other postcodes in Queensland, or widen the search to every Australian postcode.