Home Postcode finder NSW Doonbah Doonbah postcode NSW Doonbah is a locality in New South Wales covered by postcode 2473. Postcode 2473 State or territory New South Wales (NSW) Region NSW North Coast Add a free Doonbah business listing Be the first listing in Doonbah Common questionsWhat is the postcode for Doonbah?Doonbah, NSW has the postcode 2473.What state is Doonbah in?Doonbah is in New South Wales (NSW).Does postcode 2473 cover more than one suburb?Yes. Postcode 2473 covers 5 localities, so the postcode alone does not identify Doonbah. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.