smithfield postcode nswst Home ›› Postcode Finder ›› NSWST ›› Smithfield Smithfield local listingsThe suburb of Smithfield is located in NSW and has a postcode of 2164. Free smithfield business listing! 1Smithfield Public SchoolO'Connell St 02 960454752Smithfield West Public School9-11 Wetherill St 02 960431613St Gertrude's Primary School1-11 Justin St 02 96094144 View more business listings in smithfield Search and find other Postcodes in New South Wales or widen the search to Postcodes in Australia.