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