Home Postcode finder NSW Hallsville Hallsville postcode NSW Hallsville 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 Hallsville business listing Be the first listing in Hallsville Common questionsWhat is the postcode for Hallsville?Hallsville, NSW has the postcode 2340.What state is Hallsville in?Hallsville 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 Hallsville. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.