Spencer city, Iowa
Official LSAD Designation: Spencer city • Census GEOID: 1974280
• Clay County
Spencer city is an incorporated city in Clay County, Iowa. According to official records from the Census (2025), Spencer city had an estimated population of 11,218 residents. Official Census Bureau geographic records classify this community under LSAD designation Spencer city (GEOID 1974280).
Local Government Administration U.S. Census Bureau GMAF
City Of Spencer
Municipal
Official Title:
Mayor
Address:
418 2ND AVE W, SPENCER IA 51301-3875
County Of Clay
County
Official Title:
Deputy Auditor
Address:
300 W 4TH ST, STE 4, SPENCER IA 51301-3806
Civic & Statistical Snapshot
| Category | Estimate | Survey Period / Source |
|---|---|---|
| Total Population | 11,218 | 2025 |
| Median Household Income | $59,667 | 2020-2024 |
| Median Home Value | $184,800 | 2020-2024 |
| Land Area | 10.95 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).