Marshalltown city, Iowa
Official LSAD Designation: Marshalltown city • Census GEOID: 1949755
• Marshall County
Demographics & Population Profile
Population and demographics for Marshalltown city.
| Demographic Variable | Estimate / Count | Margin of Error | Period | Source |
|---|---|---|---|---|
| Total Population (2025 PEP Estimate) | 27,536 | — | 2025 | Census |
| Median Age | 35.7 yrs | ±0.9 | 2020-2024 | Census ACS 5-Year 2024 |
| Total Households | 10,135 | ±284 | 2020-2024 | Census ACS 5-Year 2024 |
Source: U.S. Census Bureau (PEP, ACS 5-Year).