ashtonfield postcode nsw Home ›› Postcode Finder ›› NSW ›› Ashtonfield Ashtonfield local listingsThe suburb of Ashtonfield is located in NSW and has a postcode of 2323. Free ashtonfield business listing! 1Hunter Valley Grammar School48 Norfolk St 02 493424442Ashtonfield Public SchoolNorfolk St 02 49343584 View more business listings in ashtonfield Search and find other Postcodes in New South Wales or widen the search to Postcodes in Australia.