Home Postcode finder NSW Coopernook Coopernook postcode NSW Coopernook is a locality in New South Wales covered by postcode 2426. Postcode 2426 State or territory New South Wales (NSW) Region Hunter Add a free Coopernook business listing More business listings in Coopernook Businesses in CoopernookCoopernook Public SchoolMacquarie St · 02 65563162 Common questionsWhat is the postcode for Coopernook?Coopernook, NSW has the postcode 2426.What state is Coopernook in?Coopernook is in New South Wales (NSW).Does postcode 2426 cover more than one suburb?Yes. Postcode 2426 covers 3 localities, so the postcode alone does not identify Coopernook. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.