Home Postcode finder NSW Highfields Highfields postcode NSW Highfields 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 Highfields business listing More business listings in Highfields Businesses in HighfieldsKU Kahibah Road Children's Centre14a George Street · 02 4943 1306 Common questionsWhat is the postcode for Highfields?Highfields, NSW has the postcode 2289.What state is Highfields in?Highfields 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 Highfields. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.