Or by the first letter of a Bank Name
| Headquarters | Date Established | Assets (1000s) | Type | |
|---|---|---|---|---|
| Stillman BancCorp N.A. | Stillman Valley, IL | 06-09-1882 | $579,972 | BK |
| DUPAGE | Naperville, IL | 01-01-1955 | $578,324 | CU |
| CHICAGO PATROLMEN'S | CHICAGO, IL | 01-01-1938 | $574,230 | CU |
| Peoples Bank & Trust | Pana, IL | 05-01-1954 | $569,714 | BK |
| Lisle Savings Bank | Lisle, IL | 01-01-1917 | $562,752 | BK |
| Bank of Hillsboro, National Association | Hillsboro, IL | 07-02-1945 | $559,109 | BK |
| TrustBank | Olney, IL | 09-13-1912 | $556,561 | BK |
| Apple River State Bank | Apple River, IL | 01-05-1948 | $551,317 | BK |
| First Eagle Bank | Chicago, IL | 02-14-1985 | $551,085 | BK |
| Peoples National Bank of Kewanee | Kewanee, IL | 03-01-1928 | $540,035 | BK |
| Devon Bank | Chicago, IL | 09-15-1945 | $530,168 | BK |
| Sterling Federal Bank, F.S.B. | Sterling, IL | 01-01-1885 | $511,487 | BK |
| First Nations Bank | Chicago, IL | 06-07-1976 | $508,221 | BK |
| Citizens Community Bank | Mascoutah, IL | 12-21-1992 | $504,020 | BK |
| West Town Bank & Trust | North Riverside, IL | 01-01-1922 | $501,285 | BK |