Home Postcode finder NSW Buddong Buddong postcode NSW Buddong is a locality in New South Wales covered by postcode 2720. Postcode 2720 State or territory New South Wales (NSW) Region Canberra Add a free Buddong business listing Be the first listing in Buddong Common questionsWhat is the postcode for Buddong?Buddong, NSW has the postcode 2720.What state is Buddong in?Buddong is in New South Wales (NSW).Does postcode 2720 cover more than one suburb?Yes. Postcode 2720 covers 28 localities, so the postcode alone does not identify Buddong. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.