Home Postcode finder QLD Rocky Creek Rocky Creek postcode QLD Rocky Creek is a locality in Queensland covered by postcode 4357. Postcode 4357 State or territory Queensland (QLD) Region Toowoomba Region Add a free Rocky Creek business listing Be the first listing in Rocky Creek Common questionsWhat is the postcode for Rocky Creek?Rocky Creek, QLD has the postcode 4357.What state is Rocky Creek in?Rocky Creek is in Queensland (QLD).Does postcode 4357 cover more than one suburb?Yes. Postcode 4357 covers 26 localities, so the postcode alone does not identify Rocky Creek. Browse other postcodes in Queensland, or widen the search to every Australian postcode.