greigs-flat postcode nswst Home ›› Postcode Finder ›› NSWST ›› Greigs-Flat Greigs Flat local listingsThe suburb of Greigs Flat is located in NSW and has a postcode of 2549. Free greigs flat business listing! Get the first free listing in greigs flat! Search and find other Postcodes in New South Wales or widen the search to Postcodes in Australia.