Home Postcode finder NSW Cooks Gap Cooks Gap postcode NSW Cooks 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 Cooks Gap business listing Be the first listing in Cooks Gap Common questionsWhat is the postcode for Cooks Gap?Cooks Gap, NSW has the postcode 2850.What state is Cooks Gap in?Cooks 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 Cooks Gap. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.