willoughby-north postcode nsw Home ›› Postcode Finder ›› NSW ›› Willoughby-North Willoughby North local listingsThe suburb of Willoughby North is located in NSW and has a postcode of 2068. Free willoughby north business listing! Get the first free listing in willoughby north! Search and find other Postcodes in New South Wales or widen the search to Postcodes in Australia.