This series includes institutions with the Charter Type call item RSSD9048 = 200; and Entity Type call item RSSD9331 = 1.
Charter Type call item RSSD9048 = 200 represents Commercial Bank (including depository trust companies, credit card companies with commercial bank charters, private banks, development banks, limited charter banks, and foreign banks)
Entity Type call item RSSD9331 = 1 represents Commercial Bank.
Geographic location is determined by Abbreviated State Name call item RSSD9200 = "IL" representing two character state abbreviation of Illinois.
For more information and definition about the specific call item codes, please see http://www.federalreserve.gov/apps/mdrm/data-dictionary.
This series is calculated by the Federal Reserve Bank of St. Louis using raw data that are collected by the FFIEC. Raw data can be found at https://cdr.ffiec.gov/public/.
Federal Financial Institutions Examination Council (US), Commercial Banks in Illinois [ILNUM], retrieved from FRED, Federal Reserve Bank of St. Louis; https://fred.stlouisfed.org/series/ILNUM, May 26, 2019.