grattai postcode nswst Home ›› Postcode Finder ›› NSWST ›› Grattai Grattai local listingsThe suburb of Grattai is located in NSW and has a postcode of 2850. Free grattai business listing! Get the first free listing in grattai! Search and find other Postcodes in New South Wales or widen the search to Postcodes in Australia.