Home Postcode finder QLD Royston Royston postcode QLD Royston is a locality in Queensland covered by postcode 4515. Postcode 4515 State or territory Queensland (QLD) Region Moreton Add a free Royston business listing Be the first listing in Royston Common questionsWhat is the postcode for Royston?Royston, QLD has the postcode 4515.What state is Royston in?Royston is in Queensland (QLD).Does postcode 4515 cover more than one suburb?Yes. Postcode 4515 covers 12 localities, so the postcode alone does not identify Royston. Browse other postcodes in Queensland, or widen the search to every Australian postcode.