Storm Lake city, Iowa
Official LSAD Designation: Storm Lake city • Census GEOID: 1975630
• Buena Vista County
Demographics & Population Profile
Population and demographics for Storm Lake city.
| Demographic Variable | Estimate / Count | Margin of Error | Period | Source |
|---|---|---|---|---|
| Total Population (2025 PEP Estimate) | 11,590 | — | 2025 | Census |
| Median Age | 30.9 yrs | ±1.2 | 2020-2024 | Census ACS 5-Year 2024 |
| Total Households | 3,975 | ±164 | 2020-2024 | Census ACS 5-Year 2024 |
Source: U.S. Census Bureau (PEP, ACS 5-Year).