Home Postcode finder NSW Cobark Cobark postcode NSW Cobark is a locality in New South Wales covered by postcode 2422. Postcode 2422 State or territory New South Wales (NSW) Region Hunter Add a free Cobark business listing Be the first listing in Cobark Common questionsWhat is the postcode for Cobark?Cobark, NSW has the postcode 2422.What state is Cobark in?Cobark is in New South Wales (NSW).Does postcode 2422 cover more than one suburb?Yes. Postcode 2422 covers 45 localities, so the postcode alone does not identify Cobark. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.