Home Postcode finder NSW Rosebrook Rosebrook postcode NSW Rosebrook is a locality in New South Wales covered by postcode 2320. Postcode 2320 State or territory New South Wales (NSW) Region Hunter Add a free Rosebrook business listing Be the first listing in Rosebrook Common questionsWhat is the postcode for Rosebrook?Rosebrook, NSW has the postcode 2320.What state is Rosebrook in?Rosebrook is in New South Wales (NSW).Does postcode 2320 cover more than one suburb?Yes. Postcode 2320 covers 30 localities, so the postcode alone does not identify Rosebrook. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.