What are the Bethlehem, South Dakota Zip Codes for 2020, 2019Primary Zip Codes for BethlehemZip CodePrimary CitySecondary City57769PiedmontBethlehem, Grashul, Tilford, Summerset,Cities sharing Zip Codes with BethlehemZip CodePrimary CitySecondary CityMore Information57769PiedmontBethlehem57769PiedmontGrashul57769PiedmontTilford57769PiedmontSummerset Summerset population stats Advertisements