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 Area Transit Authority subway line. BAT operates a fleet of Gillig Low Floor buses. Brockton bus service was previously operated by Union Street Railway, until a protracted labor strike prompted the city to buy the routes and buses in September 1973. One year later, this system was reorganized as BAT to secure state funding, and encourage regional participation. Brockton Area Transit Authority Brockton Area Transit Authority (BAT) is a public, non-profit organization in Massachusetts, charged with providing public transportation to the Brockton area, consisting of the city of Brockton and the adjoining towns of Abington, Avon, Bridgewater, East Bridgewater, Easton, Stoughton, Canton, West