ashtonfield postcode nswdl Home ›› Postcode Finder ›› NSWDL ›› Ashtonfield Ashtonfield local listingsThe suburb of Ashtonfield is located in NSW and has a postcode of 2323. Free ashtonfield business listing! 1Ashtonfield Public SchoolNorfolk St 02 493435842Hunter Valley Grammar School48 Norfolk St 02 49342444 View more business listings in ashtonfield Search and find other Postcodes in New South Wales or widen the search to Postcodes in Australia.