thornton postcode nsw Home ›› Postcode Finder ›› NSW ›› Thornton Thornton local listingsThe suburb of Thornton is located in NSW and has a postcode of 2322. Free thornton business listing! 1Black Hill Public SchoolBlack Hill 02 493031372Thornton Public School28 Government Rd 02 496413693KU Maitland Mobile Preschool - ThorntonPat Hughes Community Hall - Taylor Ave 02 4933 8777 View more business listings in thornton Search and find other Postcodes in New South Wales or widen the search to Postcodes in Australia.