Home Postcode finder NSW Grahamstown Grahamstown postcode NSW Grahamstown is a locality in New South Wales covered by postcode 2729. Postcode 2729 State or territory New South Wales (NSW) Region Canberra Add a free Grahamstown business listing Be the first listing in Grahamstown Common questionsWhat is the postcode for Grahamstown?Grahamstown, NSW has the postcode 2729.What state is Grahamstown in?Grahamstown is in New South Wales (NSW).Does postcode 2729 cover more than one suburb?Yes. Postcode 2729 covers 17 localities, so the postcode alone does not identify Grahamstown. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.