Home Postcode finder NSW Higher Macdonald Higher Macdonald postcode NSW Higher Macdonald is a locality in New South Wales covered by postcode 2775. Postcode 2775 State or territory New South Wales (NSW) Region Seven Hills Add a free Higher Macdonald business listing Be the first listing in Higher Macdonald Common questionsWhat is the postcode for Higher Macdonald?Higher Macdonald, NSW has the postcode 2775.What state is Higher Macdonald in?Higher Macdonald is in New South Wales (NSW).Does postcode 2775 cover more than one suburb?Yes. Postcode 2775 covers 17 localities, so the postcode alone does not identify Higher Macdonald. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.