greta-main postcode nswrv Home ›› Postcode Finder ›› NSWRV ›› Greta-Main Greta Main local listingsThe suburb of Greta Main is located in NSW and has a postcode of 2325. Free greta main business listing! Get the first free listing in greta main! Search and find other Postcodes in New South Wales or widen the search to Postcodes in Australia.