Home Postcode finder NSW Hayes Gap Hayes Gap postcode NSW Hayes Gap is a locality in New South Wales covered by postcode 2850. Postcode 2850 State or territory New South Wales (NSW) Region NSW Country West Add a free Hayes Gap business listing Be the first listing in Hayes Gap Common questionsWhat is the postcode for Hayes Gap?Hayes Gap, NSW has the postcode 2850.What state is Hayes Gap in?Hayes Gap is in New South Wales (NSW).Does postcode 2850 cover more than one suburb?Yes. Postcode 2850 covers 77 localities, so the postcode alone does not identify Hayes Gap. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.