Chelsea is a city in Suffolk County, Massachusetts, United States, directly across the Mystic River from the city of Boston. As of the 2020 census, Chelsea had a population of 40,787.[2] With a total area of just 2.46 square miles,[3] Chelsea is the smallest city in Massachusetts in terms of total area.[4] It is the second most densely populated city in Massachusetts, behind Somerville, and is the city with the second-highest percentage of Latino residents in Massachusetts, behind Lawrence.

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Academy of Music burned in 1905