Home Postcode finder NSW Gundagai Gundagai postcode NSW Gundagai is a locality in New South Wales covered by postcode 2722. Postcode 2722 State or territory New South Wales (NSW) Region Canberra Add a free Gundagai business listing More business listings in Gundagai Businesses in GundagaiGundagai High SchoolHanley St · 02 69441233Gundagai Public SchoolWilliam St · 02 69441811Gundagai South Public SchoolLuke St · 02 69441117 Common questionsWhat is the postcode for Gundagai?Gundagai, NSW has the postcode 2722.What state is Gundagai in?Gundagai is in New South Wales (NSW).Does postcode 2722 cover more than one suburb?Yes. Postcode 2722 covers 9 localities, so the postcode alone does not identify Gundagai. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.