Or by the first letter of a Bank Name
| Headquarters | Date Established | Assets (1000s) | Type | |
|---|---|---|---|---|
| DUPAGE COUNTY EMPLOYEES | WHEATON, IL | 01-01-1954 | $18,866 | CU |
| Grand Rivers Community Bank | Grand Chain, IL | 01-01-1902 | $18,236 | BK |
| CBI | PLAINFIELD, IL | 01-01-1963 | $17,913 | CU |
| LINXUS | MACHESNEY PARK, IL | 01-01-1927 | $17,685 | CU |
| NORTHERN ILLINOIS | DEKALB, IL | 01-01-1958 | $17,554 | CU |
| ADM | Decatur, IL | 01-01-1941 | $16,648 | CU |
| AMBRAW | Lawrenceville, IL | 01-01-1935 | $16,628 | CU |
| CARLE EMPLOYEES | URBANA, IL | 01-01-1965 | $16,393 | CU |
| OPERATING ENGINEERS LOCAL #148 | Granite City, IL | 01-01-1943 | $16,323 | CU |
| CHAMPAIGN COUNTY SCHOOL EMPLOYEES | Champaign, IL | 01-01-1934 | $16,249 | CU |
| GLENVIEW | GLENVIEW, IL | 01-01-1941 | $16,021 | CU |
| SOUTHWEST CHICAGO CHAPTER | Chicago, IL | 01-01-1960 | $16,007 | CU |
| OTTAWA HIWAY | OTTAWA, IL | 01-01-1963 | $15,993 | CU |
| Hartsburg State Bank | Hartsburg, IL | 03-13-1901 | $15,885 | BK |
| Sainte Marie State Bank | Sainte Marie, IL | 01-01-1900 | $15,545 | BK |