What are the Smiths Park, South Dakota Zip Codes for 2020, 2019Primary Zip Codes for Smiths ParkZip CodePrimary CitySecondary City57075WentworthSmiths Park, Lake Madison,Cities sharing Zip Codes with Smiths ParkZip CodePrimary CitySecondary CityMore Information57075WentworthSmiths Park57075WentworthLake Madison Lake Madison population stats Advertisements