Home Postcode finder NSW Caffreys Flat Caffreys Flat postcode NSW Caffreys Flat is a locality in New South Wales covered by postcode 2424. Postcode 2424 State or territory New South Wales (NSW) Region Hunter Add a free Caffreys Flat business listing Be the first listing in Caffreys Flat Common questionsWhat is the postcode for Caffreys Flat?Caffreys Flat, NSW has the postcode 2424.What state is Caffreys Flat in?Caffreys Flat is in New South Wales (NSW).Does postcode 2424 cover more than one suburb?Yes. Postcode 2424 covers 9 localities, so the postcode alone does not identify Caffreys Flat. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.