Home Postcode finder NSW Cardiff Heights Cardiff Heights postcode NSW Cardiff Heights 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 Heights business listing Be the first listing in Cardiff Heights Common questionsWhat is the postcode for Cardiff Heights?Cardiff Heights, NSW has the postcode 2285.What state is Cardiff Heights in?Cardiff Heights 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 Heights. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.