Home Postcode finder NSW Newcastle University Newcastle University postcode NSW Newcastle University is a locality in New South Wales covered by postcode 2308. Postcode 2308 State or territory New South Wales (NSW) Region Hunter Add a free Newcastle University business listing Be the first listing in Newcastle University Common questionsWhat is the postcode for Newcastle University?Newcastle University, NSW has the postcode 2308.What state is Newcastle University in?Newcastle University is in New South Wales (NSW).Does postcode 2308 cover more than one suburb?Yes. Postcode 2308 covers 2 localities, so the postcode alone does not identify Newcastle University. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.