Home Postcode finder QLD Rush Creek Rush Creek postcode QLD Rush Creek is a locality in Queensland covered by postcode 4521. Postcode 4521 State or territory Queensland (QLD) Region Moreton Add a free Rush Creek business listing Be the first listing in Rush Creek Common questionsWhat is the postcode for Rush Creek?Rush Creek, QLD has the postcode 4521.What state is Rush Creek in?Rush Creek is in Queensland (QLD).Does postcode 4521 cover more than one suburb?Yes. Postcode 4521 covers 8 localities, so the postcode alone does not identify Rush Creek. Browse other postcodes in Queensland, or widen the search to every Australian postcode.