Braintree is a suburban New Englandcity in Norfolk County, Massachusetts, United States.The population was 35,744 at the 2010 census.
The town of Braintree was settled in 1625, colonized in 1635 and incorporated in 1640 and named after the English town of Braintree. It comprised land that was later split into Quincy (incorporated in 1792), Randolph(1793), and Holbrook (1872). Braintree was part of Suffolk County until the formation of Norfolk County in 1793.The town of Braintree was the birthplace of presidents John Adams and John Quincy Adams, as well as statesman John Hancock. General Sylvanus Thayer, the "Father of West Point" was also born in Braintree, in the section of town now known as Braintree Highland.Braintree was the site of the infamous 1920 murders that led to the trial of Sacco and Vanzetti. It was the retirement home of the co-inventor of the telephone, Thomas A. Watson.