North Sioux City city, South Dakota
Official LSAD Designation: North Sioux City city • Census GEOID: 4645700
• Union County
North Sioux City city is an incorporated city in Union County, South Dakota. According to official records from the Census (2025), North Sioux City city had an estimated population of 3,036 residents. Official Census Bureau geographic records classify this community under LSAD designation North Sioux City city (GEOID 4645700).
Local Government Administration U.S. Census Bureau GMAF
City Of North Sioux
Municipal
Official Title:
Mayor
Address:
504 RIVER DR, NORTH SIOUX CITY SD 57049-3007
County Of Union
County
Official Title:
Chairman Of Board
Address:
209 E MAIN ST, STE 200, ELK POINT SD 57025-2327
Civic & Statistical Snapshot
| Category | Estimate | Survey Period / Source |
|---|---|---|
| Total Population | 3,036 | 2025 |
| Median Household Income | $71,908 | 2020-2024 |
| Median Home Value | $269,800 | 2020-2024 |
| Land Area | 3.34 sq mi | Gazetteer (2026) |
| Civic & Public Services | Hospitals, Libraries, Colleges | CMS / IMLS / IPEDS |
| Schools & Districts | NCES Directory Listings | Provided by k12guides.com |
| Nearby Airports | Landing Facilities | Provided by airport-data.com |
| Climate & Weather | NOAA 30-Year Normals | 1991–2020 |
Source: U.S. Census Bureau (PEP, ACS 5-Year).