M & T Bank- Formerly People's United Bank
Smithtown Bankcorp. is the public holding company of Bank of Smithtown. Bank of Smithtown is a 100 year old community bank headquartered in Hauppauge, NY. The bank has 21 branches located in Manhattan, Nassau and Suffolk counties. It is a full service commercial bank, focused on serving small business customers and consumers. The bank also offers insurance, trust and investment services.