watsons-bay postcode nsw Home ›› Postcode Finder ›› NSW ›› Watsons-Bay Watsons Bay local listingsThe suburb of Watsons Bay is located in NSW and has a postcode of 2030. Free watsons bay business listing! Get the first free listing in watsons bay! Search and find other Postcodes in New South Wales or widen the search to Postcodes in Australia.