Home Postcode finder NSW Cascade Cascade postcode NSW Cascade is a locality in New South Wales covered by postcode 2453. Postcode 2453 State or territory New South Wales (NSW) Region NSW North Coast Add a free Cascade business listing Be the first listing in Cascade Common questionsWhat is the postcode for Cascade?Cascade, NSW has the postcode 2453.What state is Cascade in?Cascade is in New South Wales (NSW).Does postcode 2453 cover more than one suburb?Yes. Postcode 2453 covers 20 localities, so the postcode alone does not identify Cascade. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.