greenfield-park postcode nswst Home ›› Postcode Finder ›› NSWST ›› Greenfield-Park Greenfield Park local listingsThe suburb of Greenfield Park is located in NSW and has a postcode of 2176. Free greenfield park business listing! Get the first free listing in greenfield park! Search and find other Postcodes in New South Wales or widen the search to Postcodes in Australia.