What are the Custer, South Dakota Zip Codes for 2020, 2019Primary Zip Codes for CusterZip CodePrimary CitySecondary City57730CusterCuster, Bakerville, Bluebell, Game Lodge, Harney Peak, Sanator, Sylvan Lake, Crazy HorseCities sharing Zip Codes with CusterZip CodePrimary CitySecondary CityMore Information57730CusterCrazy Horse57730CusterBakerville57730CusterBluebell57730CusterGame Lodge57730CusterHarney Peak57730CusterSanator57730CusterSylvan LakeAdvertisements