Home Postcode finder NSW Cardiff South Cardiff South postcode NSW Cardiff South is a locality in New South Wales covered by postcode 2285. Postcode 2285 State or territory New South Wales (NSW) Region Hunter Add a free Cardiff South business listing More business listings in Cardiff South Businesses in Cardiff SouthCardiff South Public School9 Lake Ave · 02 49547296 Common questionsWhat is the postcode for Cardiff South?Cardiff South, NSW has the postcode 2285.What state is Cardiff South in?Cardiff South is in New South Wales (NSW).Does postcode 2285 cover more than one suburb?Yes. Postcode 2285 covers 7 localities, so the postcode alone does not identify Cardiff South. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.