What are the Sylvan Lake, South Dakota Zip Codes for 2020, 2019Primary Zip Codes for Sylvan LakeZip CodePrimary CitySecondary City57730CusterSylvan Lake, Bakerville, Bluebell, Game Lodge, Harney Peak, Sanator, Crazy HorseCities sharing Zip Codes with Sylvan LakeZip CodePrimary CitySecondary CityMore Information57730CusterCrazy Horse57730CusterBakerville57730CusterBluebell57730CusterGame Lodge57730CusterHarney Peak57730CusterSanator57730CusterSylvan LakeAdvertisements