Marlborough, MA
Bank Main Street Bank
Main Street Bank is a federally insured bank based in Marlborough, Massachusetts.
- Type
- Bank
- Charter
- State-chartered savings institution
- Primary regulator
- FDIC
- Established
- April 3, 1860
- Headquarters
- Marlborough, MA
- FDIC certificate #
- 90235
- Fed RSSD ID
- 818401
- Holding company
- Main Street Group Bancshares Mhc
- Website
- www.bankmainstreet.com
$1.61B
Total assets Data as of Q1 2026
$1.34B
Total deposits Data as of Q1 2026
6
Branch locations Data as of Q1 2026
$2.2M
Net income Data as of Q1 2026
0.53%
Return on assets Data as of Q1 2026
Source: U.S. FDIC BankFind & NCUA 5300 Call Report (public data). Data sources · Data as of Q1 2026
Branches by state
Main Street Bank operates 6 branch locations in Massachusetts. Select a state to drill down to its towns and individual branches.
Ownership
Main Street Bank is owned by Main Street Group Bancshares Mhc. See the full ownership & merger history.
Main Street Bank financial summary
Other banks in Massachusetts
Federally insured banks headquartered in Massachusetts, by total assets.
- State Street Bank and Trust Company $386.55B
- Eastern Bank $30.62B
- Rockland Trust Company $24.79B
- Beacon Bank and Trust $22.18B
- Salem Five Cents Savings Bank $8.57B
- Needham Bank $7.17B
- Cambridge Savings Bank $6.91B
- Middlesex Savings Bank $6.15B
Similar-size banks
Institutions close to Main Street Bank’s $1.61B in assets.
- Solera National Bank $1.61B
- International Bank of Commerce $1.61B
- BankSouth $1.62B
- BTC Bank $1.62B
- Bankhometown $1.62B
- Old Dominion National Bank $1.62B