Home Postcode finder NSW Gidley Gidley postcode NSW Gidley is a locality in New South Wales covered by postcode 2340. Postcode 2340 State or territory New South Wales (NSW) Region NSW North Coast Add a free Gidley business listing Be the first listing in Gidley Common questionsWhat is the postcode for Gidley?Gidley, NSW has the postcode 2340.What state is Gidley in?Gidley is in New South Wales (NSW).Does postcode 2340 cover more than one suburb?Yes. Postcode 2340 covers 39 localities, so the postcode alone does not identify Gidley. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.