What are the Newark, South Dakota Zip Codes for 2020, 2019Primary Zip Codes for NewarkZip CodePrimary CitySecondary City57430BrittonNewark, Kidder, Spain, Sunset ColonyCities sharing Zip Codes with NewarkZip CodePrimary CitySecondary CityMore Information57430BrittonKidder57430BrittonNewark57430BrittonSpain57430BrittonSunset ColonyAdvertisements