Home Postcode finder NSW Cardiff Cardiff postcode NSW Cardiff 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 business listing More business listings in Cardiff Businesses in CardiffAcademy Sheetmetal56 Pendlebury Rd · 0249543364Auto Parts Newcastle8 Nelson Road · 1300 725 006Baldwin Industrial Australia13 Ranton St, Cardiff NSW 2285, Australia · (02) 4954 0440 Common questionsWhat is the postcode for Cardiff?Cardiff, NSW has the postcode 2285.What state is Cardiff in?Cardiff 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. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.