harpers-hill postcode nswst Home ›› Postcode Finder ›› NSWST ›› Harpers-Hill Harpers Hill local listingsThe suburb of Harpers Hill is located in NSW and has a postcode of 2321. Free harpers hill business listing! Get the first free listing in harpers hill! Search and find other Postcodes in New South Wales or widen the search to Postcodes in Australia.