Or by the first letter of a Bank Name
| Headquarters | Date Established | Assets (1000s) | Type | |
|---|---|---|---|---|
| TrustBank | Olney, IL | 09-13-1912 | $640,220 | BK |
| The First National Bank of Carmi | Carmi, IL | 12-20-1893 | $622,202 | BK |
| The Fairfield National Bank | Fairfield, IL | 02-03-1903 | $620,899 | BK |
| NATIONAL POLICE | CHICAGO, IL | 01-01-1938 | $620,727 | CU |
| FINANCIAL PLUS | OTTAWA, IL | 01-01-1951 | $607,372 | CU |
| DUPAGE | Naperville, IL | 01-01-1955 | $600,222 | CU |
| SIU | Carbondale, IL | 01-01-1938 | $591,324 | CU |
| Peoples National Bank of Kewanee | Kewanee, IL | 03-01-1928 | $587,626 | BK |
| Washington Savings Bank | Effingham, IL | 01-01-1883 | $585,335 | BK |
| FNBC Bank & Trust | La Grange, IL | 08-17-1908 | $581,583 | BK |
| HEARTLAND | Springfield, IL | 01-01-1946 | $573,661 | CU |
| Bank of Belleville | Belleville, IL | 11-04-2005 | $562,888 | BK |
| Lisle Savings Bank | Lisle, IL | 01-01-1917 | $544,528 | BK |
| First Nations Bank | Chicago, IL | 06-07-1976 | $536,612 | BK |
| Pan American Bank & Trust | Melrose Park, IL | 12-22-1995 | $536,110 | BK |