Chelsea, Massachusetts

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Chelsea
City
The Tobin Bridge, linking Chelsea and Boston
Flag Seal
Location in Suffolk County and the state of Massachusetts
Chelsea Show map of Greater Boston area Chelsea Show map of Massachusetts Chelsea Show map of the United States
Coordinates: 42°23′30″N 71°02′00″W / 42.39167°N 71.03333°W / 42.39167; -71.03333
Country	United States
State	Massachusetts
County	Suffolk
Settled	1624
Incorporated (town)	1739
Incorporated (city)	1857
Government
• Type	Council–manager
• City manager	Fidel Maltez
Area [1]
• 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	10 ft (3 m)
Population  (2020)
• Total	40,787
• Density	18,380.80/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, directly across the Mystic River from Boston. The 2020 census reported Chelsea as having a population of 40,787, thereby making it the one of the most densely populated city in Massachusetts only second to Somerville.^[2] With a total area of 2.46 square miles (6.4 km²),^[3] Chelsea is the smallest city in Massachusetts in terms of total area.^[4] It is the city with the one of the highest percentage of Latino residents in Massachusetts, only second to Lawrence.