hardys-bay postcode nswbu Home ›› Postcode Finder ›› NSWBU ›› Hardys-Bay Hardys Bay local listingsThe suburb of Hardys Bay is located in NSW and has a postcode of 2257. Free hardys bay business listing! Get the first free listing in hardys bay! Search and find other Postcodes in New South Wales or widen the search to Postcodes in Australia.