| Uninum | Name | Address 1 | Address 2 | City | County | Established | Accquired | | 17742 | NORTH MIDDLESEX SVGS BR | 7 Main St | Boston-Cambridge-Newton, MA-NH 01432 | Ayer | Middlesex | 03/05/1885 | 04/01/2017 |
| 17825 | Main Street Bank | 81 Granger Blvd | Boston-Cambridge-Newton, MA-NH 01752 | Marlborough | Middlesex | 04/03/1860 | |
| 290968 | PEPPERELL BRANCH | 80 Main St | Boston-Cambridge-Newton, MA-NH 01463 | Pepperell | Middlesex | 12/12/1994 | 04/01/2017 |
| 291314 | SOUTHBOROUGH BRANCH | 6 E Main St | Worcester, MA-CT 01772 | Southborough | Worcester | 06/20/1978 | 12/31/1999 |
| 291315 | NORTHBOROUGH BRANCH | 101 W Main St | Worcester, MA-CT 01532 | Northborough | Worcester | 05/31/1996 | 12/31/1999 |
| 582225 | HUDSON BRANCH | 186 Main St | Boston-Cambridge-Newton, MA-NH 01749 | Hudson | Middlesex | 06/06/2016 | 12/31/1999 |
