Castalia city, Iowa
Official LSAD Designation: Castalia city • Census GEOID: 1911485
• Winneshiek County
Demographics & Population Profile
Population and demographics for Castalia city.
| Demographic Variable | Estimate / Count | Margin of Error | Period | Source |
|---|---|---|---|---|
| Total Population (2025 PEP Estimate) | 142 | — | 2025 | Census |
| Median Age | 58 yrs | ±12.9 | 2020-2024 | Census ACS 5-Year 2024 |
| Total Households | 72 | ±20 | 2020-2024 | Census ACS 5-Year 2024 |
Source: U.S. Census Bureau (PEP, ACS 5-Year).