Lexington is a suburban town in Middlesex County, Massachusetts, United States. It is 10 miles from Downtown Boston. The population was 31,394 at the 2010 census, which was estimated at 33,727 in 2018. Settled in 1641 as a farming community, it is well known as the site of the first shots of the American Revolutionary War, in the Battle of Lexington on April 19, 1775. It is home to Minute Man National Historical Park.