Portsmouth city, New Hampshire
Official LSAD Designation: Portsmouth city • Census GEOID: 3362900
• Rockingham County
Demographics & Population Profile
Population and demographics for Portsmouth city.
| Demographic Variable | Estimate / Count | Margin of Error | Period | Source |
|---|---|---|---|---|
| Total Population (2025 PEP Estimate) | 23,028 | — | 2025 | Census |
| Median Age | 42.9 yrs | ±2 | 2020-2024 | Census ACS 5-Year 2024 |
| Total Households | 10,902 | ±387 | 2020-2024 | Census ACS 5-Year 2024 |
Source: U.S. Census Bureau (PEP, ACS 5-Year).