Home Postcode finder NSW Westbrook Westbrook postcode NSW Westbrook is a locality in New South Wales covered by postcode 2330. Postcode 2330 State or territory New South Wales (NSW) Region Hunter Add a free Westbrook business listing Be the first listing in Westbrook Common questionsWhat is the postcode for Westbrook?Westbrook, NSW has the postcode 2330.What state is Westbrook in?Westbrook is in New South Wales (NSW).Does postcode 2330 cover more than one suburb?Yes. Postcode 2330 covers 63 localities, so the postcode alone does not identify Westbrook. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.