Home Postcode finder NSW North Brother North Brother postcode NSW North Brother is a locality in New South Wales covered by postcode 2443. Postcode 2443 State or territory New South Wales (NSW) Region NSW North Coast Add a free North Brother business listing Be the first listing in North Brother Common questionsWhat is the postcode for North Brother?North Brother, NSW has the postcode 2443.What state is North Brother in?North Brother is in New South Wales (NSW).Does postcode 2443 cover more than one suburb?Yes. Postcode 2443 covers 19 localities, so the postcode alone does not identify North Brother. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.