Home Postcode finder NSW Barrington Barrington postcode NSW Barrington is a locality in New South Wales covered by postcode 2422. Postcode 2422 State or territory New South Wales (NSW) Region Hunter Add a free Barrington business listing More business listings in Barrington Businesses in BarringtonBarrington Public School1 Kenmore St · 02 65584258 Common questionsWhat is the postcode for Barrington?Barrington, NSW has the postcode 2422.What state is Barrington in?Barrington is in New South Wales (NSW).Does postcode 2422 cover more than one suburb?Yes. Postcode 2422 covers 45 localities, so the postcode alone does not identify Barrington. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.