Home Postcode finder NSW Gragin Gragin postcode NSW Gragin is a locality in New South Wales covered by postcode 2403. Postcode 2403 State or territory New South Wales (NSW) Region NSW North Coast Add a free Gragin business listing Be the first listing in Gragin Common questionsWhat is the postcode for Gragin?Gragin, NSW has the postcode 2403.What state is Gragin in?Gragin is in New South Wales (NSW).Does postcode 2403 cover more than one suburb?Yes. Postcode 2403 covers 3 localities, so the postcode alone does not identify Gragin. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.