heddon-greta postcode nswdl Home ›› Postcode Finder ›› NSWDL ›› Heddon-Greta Heddon Greta local listingsThe suburb of Heddon Greta is located in NSW and has a postcode of 2321. Free heddon greta business listing! Get the first free listing in heddon greta! Search and find other Postcodes in New South Wales or widen the search to Postcodes in Australia.