newton postcode sa Home ›› Postcode Finder ›› SA ›› Newton Newton local listingsThe suburb of Newton is located in SA and has a postcode of 5074. Free newton business listing! 1Complete Food Services Adelaide95 Graves St, Newton SA 5074, Australia 013009223162Forno Alfresco11 Benjamin Street, Newton SA, Australia 04 0292 03613City Concrete Pumping5 Antonio Court 0883654000 View more business listings in newton Search and find other Postcodes in South Australia or widen the search to Postcodes in Australia.