Home Postcode finder NSW Crangan Bay Crangan Bay postcode NSW Crangan Bay is a locality in New South Wales covered by postcode 2259. Postcode 2259 State or territory New South Wales (NSW) Region Gosford Add a free Crangan Bay business listing Be the first listing in Crangan Bay Common questionsWhat is the postcode for Crangan Bay?Crangan Bay, NSW has the postcode 2259.What state is Crangan Bay in?Crangan Bay is in New South Wales (NSW).Does postcode 2259 cover more than one suburb?Yes. Postcode 2259 covers 42 localities, so the postcode alone does not identify Crangan Bay. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.