smithfield postcode sa Home ›› Postcode Finder ›› SA ›› Smithfield Smithfield local listingsThe suburb of Smithfield is located in SA and has a postcode of 5114. Free smithfield business listing! 1OZI Wreckers Adelaide3 Palina Rd, Smithfield SA 5114, Australia 08846579872Local Cash For Cars1/2 Palina Rd, Smithfield SA 5114, Australia 4992174313Pizza Boxes PlusPizza Boxes Plus. PO Box 143 1300 344 977 View more business listings in smithfield Search and find other Postcodes in South Australia or widen the search to Postcodes in Australia.