Home Postcode finder NSW Clifton Clifton postcode NSW Clifton is a locality in New South Wales covered by postcode 2515. Postcode 2515 State or territory New South Wales (NSW) Region Illawarra Add a free Clifton business listing Be the first listing in Clifton Common questionsWhat is the postcode for Clifton?Clifton, NSW has the postcode 2515.What state is Clifton in?Clifton is in New South Wales (NSW).Does postcode 2515 cover more than one suburb?Yes. Postcode 2515 covers 6 localities, so the postcode alone does not identify Clifton. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.