North Sioux City ZIP Code Finder by Area and Number South Dakota

The North Sioux City zip code is 57049 in South Dakota helps people find the correct mailing location for homes, businesses, and services in North Sioux City.

North Sioux City Zip Code - 57049

The North Sioux City South Dakota zip code is used by USPS for mail delivery, shipping, and address identification across North Sioux City and nearby South Dakota cities.

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