Brookline (/ˈbrʊklaɪn/ ) is a town in Norfolk County, Massachusetts, United States, and part of the Boston metropolitan area. An exclave of Norfolk County, Brookline borders six of Boston's neighborhoods: Brighton, Allston, Fenway–Kenmore, Mission Hill, Jamaica Plain, and West Roxbury. The city of Newton borders Brookline to the west. It is known for being the birthplace of John F. Kennedy.
The land which comprises what is today Brookline was first settled in 1638 as a hamlet in Boston, known as Muddy River (as it was settled on the west side of the river of the same name). It was incorporated as a separate town with the name of Brookline in 1705. In 1873, Brookline had a contentious referendum in which it voted to remain independent from Boston. The later annexations of Brighton and West Roxbury, both in 1874, and that of Hyde Park in 1912, eventually made Brookline into an exclave of Norfolk County. The town had a history of racial discrimination in zoning, which has led to a disproportionately wealthy population, and a Black population of 2.5%.