What are the Swett, South Dakota Zip Codes for 2020, 2019Primary Zip Codes for SwettZip CodePrimary CitySecondary City57551MartinSwett, Harrington, Patricia, VetalCities sharing Zip Codes with SwettZip CodePrimary CitySecondary CityMore Information57551MartinVetal57551MartinHarrington57551MartinPatricia57551MartinSwettAdvertisements