Home Postcode finder NSW Belmont South Belmont South postcode NSW Belmont South is a locality in New South Wales covered by postcode 2280. Postcode 2280 State or territory New South Wales (NSW) Region Hunter Add a free Belmont South business listing Be the first listing in Belmont South Common questionsWhat is the postcode for Belmont South?Belmont South, NSW has the postcode 2280.What state is Belmont South in?Belmont South is in New South Wales (NSW).Does postcode 2280 cover more than one suburb?Yes. Postcode 2280 covers 8 localities, so the postcode alone does not identify Belmont South. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.