City · United States
Chelsea
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.
Good to know
- Population: 39,398.
- Founded: 1624.
- Area: 6.4 sq km.
- Elevation: 12 m.
- Timezone: America/New_York.