The banking headquarters of Santander Bank are in Boston, Massachusetts, as of 2015. The bank principally services states in the northeast region of the country. Santander Bank in the United States is a wholly-owned subsidiary of Banco Santander, which is headquartered in Santander, Spain, where it was founded in 1857.
Santander Bank has over 700 branches in the United States, mostly in states such as New York, New Jersey, Connecticut, Delaware and Pennsylvania. The Santander Group is a Spanish banking group that runs Banco Santander, one of the largest banks in the world with over 102 million customers worldwide. It is the largest bank in the Eurozone by market value.