Home Postcode finder NSW Thornton Thornton postcode NSW Thornton is a locality in New South Wales covered by postcode 2322. Postcode 2322 State or territory New South Wales (NSW) Region Hunter Add a free Thornton business listing More business listings in Thornton Businesses in ThorntonBlack Hill Public SchoolBlack Hill · 02 49303137Delnorth63 Bonville Avenue, Thornton NSW 2322, Australia · 0240336500Dentist in Thornton - Thornton Dental Clinic30/1 Taylor Ave, Thornton NSW, Australia · 0249662996 Common questionsWhat is the postcode for Thornton?Thornton, NSW has the postcode 2322.What state is Thornton in?Thornton is in New South Wales (NSW).Does postcode 2322 cover more than one suburb?Yes. Postcode 2322 covers 10 localities, so the postcode alone does not identify Thornton. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.