Home Postcode finder NSW Constitution Hill Constitution Hill postcode NSW Constitution Hill is a locality in New South Wales covered by postcode 2145. Postcode 2145 State or territory New South Wales (NSW) Region Seven Hills Add a free Constitution Hill business listing More business listings in Constitution Hill Businesses in Constitution HillChromeinfotech5 Brett Ave · +61 3 9010 5004 Common questionsWhat is the postcode for Constitution Hill?Constitution Hill, NSW has the postcode 2145.What state is Constitution Hill in?Constitution Hill is in New South Wales (NSW).Does postcode 2145 cover more than one suburb?Yes. Postcode 2145 covers 9 localities, so the postcode alone does not identify Constitution Hill. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.