catherine-hill-bay postcode nswst Home ›› Postcode Finder ›› NSWST ›› Catherine-Hill-Bay Catherine Hill Bay local listingsThe suburb of Catherine Hill Bay is located in NSW and has a postcode of 2281. Free catherine hill bay business listing! Get the first free listing in catherine hill bay! Search and find other Postcodes in New South Wales or widen the search to Postcodes in Australia.