galston postcode nsw Home ›› Postcode Finder ›› NSW ›› Galston Galston local listingsThe suburb of Galston is located in NSW and has a postcode of 2159. Free galston business listing! 1Galston High School403 Galston Rd 02 965122222Galston Public SchoolArcadia Rd 02 965320623KU Galston Preschool37 Arcadia Road (Rear section) 02 9653 2252 View more business listings in galston Search and find other Postcodes in New South Wales or widen the search to Postcodes in Australia.