Home Postcode finder NSW Garden Suburb Garden Suburb postcode NSW Garden Suburb is a locality in New South Wales covered by postcode 2289. Postcode 2289 State or territory New South Wales (NSW) Region Hunter Add a free Garden Suburb business listing More business listings in Garden Suburb Businesses in Garden SuburbGarden Suburb Public SchoolProspect Rd · 02 49434898 Common questionsWhat is the postcode for Garden Suburb?Garden Suburb, NSW has the postcode 2289.What state is Garden Suburb in?Garden Suburb is in New South Wales (NSW).Does postcode 2289 cover more than one suburb?Yes. Postcode 2289 covers 7 localities, so the postcode alone does not identify Garden Suburb. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.