Cooperative Bank Address: 201 Main St, Charlestown, MA 02129 Phone: (617) 242-0380 Banks, Savings & Loan Associations, Savings Institutions-Except Federal Other Businesses: The Cooperative Bank at 201 Main St, Charlestown, MA 02129 Citizens Bank at 5 Austin St, Charlestown, MA 02129 Santander Bank ATM at 509 Main St, Charlestown, MA 02129 Boston Financial Corporation at 3 Shipway Pl, Charlestown, MA 02129