Home Postcode finder NSW Cathundral Cathundral postcode NSW Cathundral is a locality in New South Wales covered by postcode 2823. Postcode 2823 State or territory New South Wales (NSW) Region NSW Country West Add a free Cathundral business listing Be the first listing in Cathundral Common questionsWhat is the postcode for Cathundral?Cathundral, NSW has the postcode 2823.What state is Cathundral in?Cathundral is in New South Wales (NSW).Does postcode 2823 cover more than one suburb?Yes. Postcode 2823 covers 5 localities, so the postcode alone does not identify Cathundral. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.