[1] The bank operated 403 branches in Connecticut, southeastern New York State, Massachusetts, Vermont, Maine, and New Hampshire.

[1] It was the second-largest full-service bank in New England, one of the largest in the northeast, and the 46th-largest in the United States.

[4][5] In February 2008, a data storage company, Archive America, lost backup tapes in transit containing the "names, birthdays, Social Security numbers and other information" of customers of the bank and of The Bank of New York Mellon.

[11] People's United was notably selected to manage the core bank accounts for the Commonwealth of Massachusetts in November 2016,[12] and was also selected to manage the core bank accounts for the state of Vermont in August 2017.

[14] From its founding as Bridgeport Savings Bank to the present, People's United has acquired several banks and other financial institutions in New England including: People's United Financial's headquarters was built in 1989, designed by architect Richard Meier.