Sioux City city, Iowa
Official LSAD Designation: Sioux City city • Census GEOID: 1973335
• Plymouth County / Woodbury County
Sioux City city is an incorporated city in Plymouth County, Woodbury County, Iowa. According to official records from the Census (2025), Sioux City city had an estimated population of 86,356 residents. Official Census Bureau geographic records classify this community under LSAD designation Sioux City city (GEOID 1973335).
Local Government Administration U.S. Census Bureau GMAF
City Of Sioux City
Municipal
Official Title:
Budget And Financial Manager
Address:
PO BOX 447, SIOUX CITY IA 51102-0447
County Of Plymouth
County
Official Title:
County Auditor
Address:
215 4TH AVE SE, LE MARS IA 51031-2153
Civic & Statistical Snapshot
| Category | Estimate | Survey Period / Source |
|---|---|---|
| Total Population | 86,356 | 2025 |
| Median Household Income | $68,906 | 2020-2024 |
| Median Home Value | $173,600 | 2020-2024 |
| Land Area | 59.39 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).