Brockton, Massachusetts 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 are Montello and Campello, both have the distinction of having their own MBTA Commuter Rail Stations and post offices. Campello is the
Brockton station (MBTA) on the western track). It was replaced between 1880 and 1891 by a Victorian-style station located close by at Church Street, also west of the tracks. Commuting from Brockton to Boston on the railroad was possible after 1854, and Brockton was the outer terminus of some trains in the late 1850s and early 1860s. The railroad became the Old Colony and Newport Railroad in 1863, and finally the Old Colony Railroad in 1872. The town was renamed Brockton in 1874, with the railroad station changing its name on May 7. The railroad was a key part of the town's burgeoning