Chelsea city, Massachusetts
Official LSAD Designation: Chelsea city • Census GEOID: 2513205
• Suffolk County
Demographics & Population Profile
Population and demographics for Chelsea city.
| Demographic Variable | Estimate / Count | Margin of Error | Period | Source |
|---|---|---|---|---|
| Total Population (2025 PEP Estimate) | 40,130 | — | 2025 | Census |
| Median Age | 34.4 yrs | ±1.3 | 2020-2024 | Census ACS 5-Year 2024 |
| Total Households | 13,716 | ±635 | 2020-2024 | Census ACS 5-Year 2024 |
Source: U.S. Census Bureau (PEP, ACS 5-Year).