Home Postcode finder QLD Brush Creek Brush Creek postcode QLD Brush Creek is a locality in Queensland covered by postcode 4387. Postcode 4387 State or territory Queensland (QLD) Region Toowoomba Region Add a free Brush Creek business listing Be the first listing in Brush Creek Common questionsWhat is the postcode for Brush Creek?Brush Creek, QLD has the postcode 4387.What state is Brush Creek in?Brush Creek is in Queensland (QLD).Does postcode 4387 cover more than one suburb?Yes. Postcode 4387 covers 9 localities, so the postcode alone does not identify Brush Creek. Browse other postcodes in Queensland, or widen the search to every Australian postcode.