Plattsmouth city, Nebraska
Official LSAD Designation: Plattsmouth city • Census GEOID: 3139345
• Cass County
Demographics & Population Profile
Population and demographics for Plattsmouth city.
| Demographic Variable | Estimate / Count | Margin of Error | Period | Source |
|---|---|---|---|---|
| Total Population (2025 PEP Estimate) | 6,955 | — | 2025 | Census |
| Median Age | 38.4 yrs | ±2.7 | 2020-2024 | Census ACS 5-Year 2024 |
| Total Households | 2,850 | ±166 | 2020-2024 | Census ACS 5-Year 2024 |
Source: U.S. Census Bureau (PEP, ACS 5-Year).