Area: 4.2 sq miles (10.88 km²)
Population: 32,248 (2011)
Watertown Square is the terminus of several MBTA bus and trackless trolley routes.
Watertown is a major center of the Armenian diaspora in the United States, with the third-largest Armenian community in the United States, estimated as numbering 7,000 to over 8,000 as of 2007. In 1988, Watertown Square became the new location for the Armenian Library and Museum of America, said to host the largest collection of Armenian artifacts in North America.
Perkins School for the Blind, in Watertown, Massachusetts, is the oldest school for the blind in the United States. The Perkins School for the Blind, founded in 1829, has been located in Watertown since 1912.
The Stanley Brothers built the first of their steam-powered cars, which came to be known asStanley Steamers, in Watertown in 1897.
Eliza Dushku (1980-), film and TV actress, grew up in Watertown and graduated from Watertown High School.
Helen Keller (1880-1968), attended the Perkins Institute for the Blind.
Thomas Reilly, Massachusetts attorney general (1999-2007).
Jeff DaRosa (1982-), Musician, member of Dropkick Murphys and former member of the Exit.