Home Postcode finder NSW Booker Bay Booker Bay postcode NSW Booker Bay is a locality in New South Wales covered by postcode 2257. Postcode 2257 State or territory New South Wales (NSW) Region Gosford Add a free Booker Bay business listing Be the first listing in Booker Bay Common questionsWhat is the postcode for Booker Bay?Booker Bay, NSW has the postcode 2257.What state is Booker Bay in?Booker Bay is in New South Wales (NSW).Does postcode 2257 cover more than one suburb?Yes. Postcode 2257 covers 12 localities, so the postcode alone does not identify Booker Bay. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.