Brockton, Massachusetts Library system. The main library is a Carnegie building and is located at 304 Main Street, and there are two branch libraries. Brockton, Massachusetts Brockton is a city in Plymouth County, Massachusetts, United States; the population was 95,314 in the 2015 Census. Brockton, along with Plymouth, are the county seats of Plymouth County. Brockton is the seventh largest city in Massachusetts and is sometimes referred to as the "City of Champions", due to the success of native boxers Rocky Marciano and Marvin Hagler, as well as its successful Brockton High School sports programs. Two of the villages within the city
Brockton, Massachusetts at Queenston Heights, where invading American troops suffered a rout, in 1812), after a local merchant heard of Brockville, Ontario, on a trip to Niagara Falls. Brockton became a city on April 9, 1881. During the American Civil War, Brockton was America's largest producer of shoes, and until the latter parts of the 20th century Brockton had a large shoe and leather products industry. According to the United States Census Bureau, the city has a total area of , of which is land and (0.56%) is water. Brockton is the 162nd largest city by land area in the Commonwealth, and