What are the Mccook Lake, South Dakota Zip Codes for 2020, 2019Primary Zip Codes for Mccook LakeZip CodePrimary CitySecondary City57049North Sioux CityMccook Lake, N Sioux City, Dakota DunesCities sharing Zip Codes with Mccook LakeZip CodePrimary CitySecondary CityMore Information57049North Sioux CityMccook Lake57049North Sioux CityN Sioux City57049North Sioux CityDakota Dunes Dakota Dunes population stats Advertisements