Home Postcode finder QLD Cassowary Cassowary postcode QLD Cassowary is a locality in Queensland covered by postcode 4873. Postcode 4873 State or territory Queensland (QLD) Region North QLD Add a free Cassowary business listing Be the first listing in Cassowary Common questionsWhat is the postcode for Cassowary?Cassowary, QLD has the postcode 4873.What state is Cassowary in?Cassowary is in Queensland (QLD).Does postcode 4873 cover more than one suburb?Yes. Postcode 4873 covers 29 localities, so the postcode alone does not identify Cassowary. Browse other postcodes in Queensland, or widen the search to every Australian postcode.