Home Postcode finder NSW Gundy Gundy postcode NSW Gundy is a locality in New South Wales covered by postcode 2337. Postcode 2337 State or territory New South Wales (NSW) Region Hunter Add a free Gundy business listing Be the first listing in Gundy Common questionsWhat is the postcode for Gundy?Gundy, NSW has the postcode 2337.What state is Gundy in?Gundy is in New South Wales (NSW).Does postcode 2337 cover more than one suburb?Yes. Postcode 2337 covers 25 localities, so the postcode alone does not identify Gundy. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.