Illinois, to put it plainly, is quite a state. The Land of Lincoln, Illinois includes the nation's third largest city, Chicago, to the north, and abundant agriculture, industry, and natural resources throughout its central and southern regions. It has O'Hare International Airport and quick shipping access to the Atlantic via the Saint Lawrence Seaway.

For businesses and investors, Illinois has a lot to offer.

In the video below, Motley Fool contributor Jay Jenkins discusses the major banking players in Illinois, from JPMorgan Chase (JPM 1.80%) and Bank of America (BAC 3.38%) to Northern Trust Corp. (NTRS 0.49%) and Bank of Montreal's (BMO 1.36%) subsidiary BMO Harris Bank. Bank customers are the businesses and individuals that make the Illinois economy tick and, therefore, are a good proxy for investing on the state's prosperity.