Home Postcode finder NSW Warburn Warburn postcode NSW Warburn is a locality in New South Wales covered by postcode 2680. Postcode 2680 State or territory New South Wales (NSW) Region Canberra Add a free Warburn business listing Be the first listing in Warburn Common questionsWhat is the postcode for Warburn?Warburn, NSW has the postcode 2680.What state is Warburn in?Warburn is in New South Wales (NSW).Does postcode 2680 cover more than one suburb?Yes. Postcode 2680 covers 15 localities, so the postcode alone does not identify Warburn. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.