It's rare to see so many bank failures in one state on the same day.

New Century Bank of Chicago, Illinois
Citizens Bank&Trust Company Of Chicago from Chicago, Illinois
Broadway Bank of Chicago, Illinois
Wheatland Bank of Naperville, Illinois
Peotone Bank and Trust Company of Peotone, Illinois
Lincoln Park Savings Bank of Chicago, Illinois

The really big one for the day:
Amcore Bank National Association of Rockford, Illinois with approximately $3.8 billion in total assets and $3.4 billion in total deposits. This one will cost the FDIC at least $220 million.