Home Postcode finder NSW Kinghorne Kinghorne postcode NSW Kinghorne is a locality in New South Wales covered by postcode 2540. Postcode 2540 State or territory New South Wales (NSW) Region NSW Country West Add a free Kinghorne business listing Be the first listing in Kinghorne Common questionsWhat is the postcode for Kinghorne?Kinghorne, NSW has the postcode 2540.What state is Kinghorne in?Kinghorne is in New South Wales (NSW).Does postcode 2540 cover more than one suburb?Yes. Postcode 2540 covers 68 localities, so the postcode alone does not identify Kinghorne. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.