Home Postcode finder NSW Horsfield Bay Horsfield Bay postcode NSW Horsfield Bay is a locality in New South Wales covered by postcode 2256. Postcode 2256 State or territory New South Wales (NSW) Region Gosford Add a free Horsfield Bay business listing Be the first listing in Horsfield Bay Common questionsWhat is the postcode for Horsfield Bay?Horsfield Bay, NSW has the postcode 2256.What state is Horsfield Bay in?Horsfield Bay is in New South Wales (NSW).Does postcode 2256 cover more than one suburb?Yes. Postcode 2256 covers 10 localities, so the postcode alone does not identify Horsfield Bay. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.