Home Postcode finder NSW Tallwood Tallwood postcode NSW Tallwood is a locality in New South Wales covered by postcode 2798. Postcode 2798 State or territory New South Wales (NSW) Region NSW Country West Add a free Tallwood business listing Be the first listing in Tallwood Common questionsWhat is the postcode for Tallwood?Tallwood, NSW has the postcode 2798.What state is Tallwood in?Tallwood is in New South Wales (NSW).Does postcode 2798 cover more than one suburb?Yes. Postcode 2798 covers 5 localities, so the postcode alone does not identify Tallwood. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.