Home Postcode finder NSW Cathcart Cathcart postcode NSW Cathcart is a locality in New South Wales covered by postcode 2632. Postcode 2632 State or territory New South Wales (NSW) Region Canberra Add a free Cathcart business listing Be the first listing in Cathcart Common questionsWhat is the postcode for Cathcart?Cathcart, NSW has the postcode 2632.What state is Cathcart in?Cathcart is in New South Wales (NSW).Does postcode 2632 cover more than one suburb?Yes. Postcode 2632 covers 18 localities, so the postcode alone does not identify Cathcart. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.