Home Postcode finder NSW Barren Grounds Barren Grounds postcode NSW Barren Grounds is a locality in New South Wales covered by postcode 2577. Postcode 2577 State or territory New South Wales (NSW) Region Ingleburn Add a free Barren Grounds business listing Be the first listing in Barren Grounds Common questionsWhat is the postcode for Barren Grounds?Barren Grounds, NSW has the postcode 2577.What state is Barren Grounds in?Barren Grounds is in New South Wales (NSW).Does postcode 2577 cover more than one suburb?Yes. Postcode 2577 covers 30 localities, so the postcode alone does not identify Barren Grounds. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.