Home Postcode finder QLD Western Creek Western Creek postcode QLD Western Creek is a locality in Queensland covered by postcode 4357. Postcode 4357 State or territory Queensland (QLD) Region Toowoomba Region Add a free Western Creek business listing Be the first listing in Western Creek Common questionsWhat is the postcode for Western Creek?Western Creek, QLD has the postcode 4357.What state is Western Creek in?Western 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 Western Creek. Browse other postcodes in Queensland, or widen the search to every Australian postcode.