Chelsea, Massachusetts
Chelsea, Massachusetts | |
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The Tobin Bridge, linking Chelsea and Boston | |
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Flag Seal | |
Location in Suffolk County and the state of Massachusetts | |
Chelsea Chelsea Chelsea | |
| Coordinates: 42°23′30″N 71°02′00″W / 42.39167°N 71.03333°W | |
| Country | United States |
| State | Massachusetts |
| County | Suffolk |
| Settled | 1624 |
| Incorporated (town) | 1739 |
| Incorporated (city) | 1857 |
| Government | |
| • Type | Council–manager |
| • City manager | Fidel Maltez |
| Area | |
• Total | 2.47 sq mi (6.39 km2) |
| • Land | 2.22 sq mi (5.75 km2) |
| • Water | 0.25 sq mi (0.64 km2) |
| Elevation | 9.8 ft (3 m) |
| Population (2020) | |
• Total | 40,787 |
| • Density | 18,383.4/sq mi (7,097.87/km2) |
| Time zone | UTC−5 (Eastern) |
| • Summer (DST) | UTC−4 (Eastern) |
| ZIP Code | 02150 |
| Area code | 617/857 |
| FIPS code | 25-13205 |
| GNIS feature ID | 0612723 |
| Website | www.chelseama.gov |
Chelsea is a city in Suffolk County, Massachusetts, United States. It is located along the Mystic River and connected to Boston by the Tobin Bridge. As of 2026, Chelsea has a population of 40,245 and a total area of 2.2 square miles (5.7 km2). It is the smallest city in Massachusetts by land area, and the third most densely populated.