Where is Zip Code 57049 map for 2020, 2019Primary Zip Codes for 57049Zip CodePrimary CitySecondary City57049North Sioux CityNorth Sioux City, Mccook Lake, N Sioux City, Dakota DunesCities sharing Zip Codes with 57049Zip CodePrimary CitySecondary CityMore Information57049North Sioux CityDakota Dunes Dakota Dunes population stats 57049North Sioux CityMccook Lake57049North Sioux CityN Sioux CityAdvertisements