Home Postcode finder NSW Coniston Coniston postcode NSW Coniston is a locality in New South Wales covered by postcode 2500. Postcode 2500 State or territory New South Wales (NSW) Region Illawarra Add a free Coniston business listing More business listings in Coniston Businesses in ConistonArrow Electrical Services109 Auburn St · 0242273088Australian Technical College3 Bridge St · 02 42259911Coniston Public School123 Auburn St · 02 42291117 Common questionsWhat is the postcode for Coniston?Coniston, NSW has the postcode 2500.What state is Coniston in?Coniston is in New South Wales (NSW).Does postcode 2500 cover more than one suburb?Yes. Postcode 2500 covers 11 localities, so the postcode alone does not identify Coniston. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.