Home Postcode finder QLD Westbrook Westbrook postcode QLD Westbrook is a locality in Queensland covered by postcode 4350. Postcode 4350 State or territory Queensland (QLD) Region Toowoomba Region Add a free Westbrook business listing More business listings in Westbrook Businesses in WestbrookBunker's Hill State SchoolLot 137 Bunkers Hill School Rd · 07 46306290 Common questionsWhat is the postcode for Westbrook?Westbrook, QLD has the postcode 4350.What state is Westbrook in?Westbrook is in Queensland (QLD).Does postcode 4350 cover more than one suburb?Yes. Postcode 4350 covers 43 localities, so the postcode alone does not identify Westbrook. Browse other postcodes in Queensland, or widen the search to every Australian postcode.