Plymouth city, Indiana
Official LSAD Designation: Plymouth city • Census GEOID: 1860822
• Marshall County
Demographics & Population Profile
Population and demographics for Plymouth city.
| Demographic Variable | Estimate / Count | Margin of Error | Period | Source |
|---|---|---|---|---|
| Total Population (2025 PEP Estimate) | 11,081 | — | 2025 | Census |
| Median Age | 37.7 yrs | ±4.2 | 2020-2024 | Census ACS 5-Year 2024 |
| Total Households | 4,528 | ±277 | 2020-2024 | Census ACS 5-Year 2024 |
Source: U.S. Census Bureau (PEP, ACS 5-Year).