North Sioux City ZIP Codes

List of Zip Codes of North Sioux City

The following table lists ZIP Codes associated with North Sioux City, South Dakota, based on ZIP Code Tabulation Area (ZCTA) data from the U.S. Census Bureau.

About North Sioux City South Dakota Zip Codes

The city of North Sioux City in South Dakota (SD) is served by approximately 1 ZIP Codes. These codes cover residential neighborhoods, business districts, and surrounding localities that use the city name in their mailing address.

Based on ZIP-level population estimates, the combined population covered by these ZIP Codes is around 7,814 people. Population density can vary significantly from one ZIP Code to another, reflecting the mix of dense urban blocks, commercial corridors, and lower-density residential areas.

The ZIP Codes associated with North Sioux City fall within county jurisdictions such as Union. Each county manages local services, land use, and administration for the areas corresponding to its ZIP Codes.

Most ZIP codes for North Sioux City, South Dakota follow the America/Chicago time zone.