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Zip Code 57049 — North Sioux City, SD

57049 is a ZIP Code associated with North Sioux City, SD, located within Union. The postal region supports an estimated population of 7,962 residents across Data Pending housing units, with a population density of 216.9 people per square mile.
WorldPlaceData database updated: October 2026

📍 View location on OpenStreetMap (42.524860, -96.507320)

Data MetricLocal Statistic
Postal / Zip Code57049
Primary CityNorth Sioux City
State / ProvinceSD
CountyUnion
Total Population7,962
Median Household IncomeData Pending
Total Housing UnitsData Pending
Population Density216.9 people/sq mi
TimezoneAmerica/Chicago

How 57049 Compares

MetricZIP 57049Union CountySD State Average
Population7,96214,418906,188
Median IncomeData PendingN/AN/A
Population Density216.9 /sq mi----

Nearby ZIP Codes

ZIP CodeCityDistancePopulationMedian Income
Zip 57038Jefferson5.3 mi1,796N/A
Zip 57025Elk Point16.2 mi3,120N/A
Zip 57010Burbank25.5 mi755N/A
Zip 57069Vermillion32.9 mi13,091N/A
Zip 57001Alcester33.5 mi1,540N/A

Data Sources & Methodology: Geographic coordinates and ZIP Code assignments are derived from underlying geographic and postal datasets. Note that ZIP Codes are USPS postal delivery areas, while Census ZCTAs are statistical approximation areas. Read full methodology →