Home Postcode finder NSW Central Macdonald Central Macdonald postcode NSW Central 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 Central Macdonald business listing Be the first listing in Central Macdonald Common questionsWhat is the postcode for Central Macdonald?Central Macdonald, NSW has the postcode 2775.What state is Central Macdonald in?Central 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 Central Macdonald. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.