Groton city, Connecticut
Official LSAD Designation: Groton city • Census GEOID: 0934180
• Southeastern Connecticut Planning Region
Demographics & Population Profile
Population and demographics for Groton city.
| Demographic Variable | Estimate / Count | Margin of Error | Period | Source |
|---|---|---|---|---|
| Total Population (2025 PEP Estimate) | 10,160 | — | 2025 | Census |
| Median Age | 39 yrs | ±3.7 | 2020-2024 | Census ACS 5-Year 2024 |
| Total Households | 4,654 | ±292 | 2020-2024 | Census ACS 5-Year 2024 |
Source: U.S. Census Bureau (PEP, ACS 5-Year).