What are the Harrington, South Dakota Zip Codes for 2020, 2019Primary Zip Codes for HarringtonZip CodePrimary CitySecondary City57551MartinHarrington, Patricia, Swett, VetalCities sharing Zip Codes with HarringtonZip CodePrimary CitySecondary CityMore Information57551MartinVetal57551MartinHarrington57551MartinPatricia57551MartinSwettAdvertisements