Or by the first letter of a Bank Name
| Headquarters | Date Established | Assets (1000s) | Type | |
|---|---|---|---|---|
| State Street Bank and Trust Company | Boston, MA | 01-01-1792 | $348,989,000 | BK |
| Eastern Bank | Boston, MA | 10-19-1989 | $25,551,908 | BK |
| Rockland Trust Company | Rockland, MA | 09-10-1907 | $19,378,704 | BK |
| DIGITAL | Marlborough, MA | 01-01-1979 | $12,642,183 | CU |
| Berkshire Bank | Pittsfield, MA | 02-06-1846 | $12,267,590 | BK |
| Salem Five Cents Savings Bank | Salem, MA | 03-09-1855 | $7,844,697 | BK |
| Cambridge Savings Bank | Cambridge, MA | 04-02-1834 | $6,876,590 | BK |
| Brookline Bank | Brookline, MA | 01-01-1871 | $6,411,208 | BK |
| Middlesex Savings Bank | Natick, MA | 03-05-1835 | $6,076,219 | BK |
| HarborOne Bank | Brockton, MA | 07-01-2013 | $5,754,704 | BK |
| The Cape Cod Five Cents Savings Bank | Hyannis, MA | 03-16-1855 | $5,708,025 | BK |
| Institution for Savings in Newburyport and Its Vicinity | Newburyport, MA | 01-01-1820 | $5,342,448 | BK |
| Needham Bank | Needham, MA | 01-01-1892 | $5,006,001 | BK |
| Enterprise Bank and Trust Company | Lowell, MA | 01-03-1989 | $4,827,726 | BK |
| Leader Bank, National Association | Arlington, MA | 05-08-2002 | $4,596,441 | BK |