Home Postcode finder NSW Rothbury Rothbury postcode NSW Rothbury is a locality in New South Wales covered by postcode 2320. Postcode 2320 State or territory New South Wales (NSW) Region Hunter Add a free Rothbury business listing Be the first listing in Rothbury Common questionsWhat is the postcode for Rothbury?Rothbury, NSW has the postcode 2320.What state is Rothbury in?Rothbury is in New South Wales (NSW).Does postcode 2320 cover more than one suburb?Yes. Postcode 2320 covers 30 localities, so the postcode alone does not identify Rothbury. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.