grevillia postcode nswst Home ›› Postcode Finder ›› NSWST ›› Grevillia Grevillia local listingsThe suburb of Grevillia is located in NSW and has a postcode of 2474. Free grevillia business listing! 1Grevillia Public SchoolKyogle Rd 02 66364116 View more business listings in grevillia Search and find other Postcodes in New South Wales or widen the search to Postcodes in Australia.