The fed explains regional banks
A regional bank is a depository institution, i.e. a bank, savings and loan, or credit union, which is larger than a community bank, which operates below the state level, but smaller than a money center bank, which operates either nationally or internationally. A regional bank is one that operates in one region of a country, such as a state or within a group of states. The definition of what constitutes a regional bank is not precise. They generally provide, with some limitations, the same services as larger banks, such as deposits; loans, leases, mortgages, and credit cards; ATM networks; securities brokerage; investment banking; insurance sales; and mutual fund and pension fund management. The term is often used in stock trading, when referring to investing in different bank types, usually referred to as regional bank ETF's (exchange-traded funds).