Or by the first letter of a Bank Name
| Headquarters | Date Established | Assets (1000s) | Type | |
|---|---|---|---|---|
| Heartland Bank and Trust Company | Bloomington, IL | 02-22-1971 | $5,069,451 | BK |
| Hinsdale Bank & Trust Company, National Association | Hinsdale, IL | 10-28-1993 | $4,881,936 | BK |
| Northbrook Bank and Trust Company, National Association | Northbrook, IL | 11-22-2000 | $4,724,876 | BK |
| STATE FARM | Bloomington, IL | 01-01-1936 | $4,334,139 | CU |
| Barrington Bank & Trust Company, National Association | Barrington, IL | 12-19-1996 | $4,007,008 | BK |
| CONSUMERS COOPERATIVE | Gurnee, IL | 01-01-1930 | $3,525,631 | CU |
| United Community Bank | Chatham, IL | 07-12-1965 | $3,492,867 | BK |
| Parkway Bank and Trust Company | Harwood Heights, IL | 01-22-1964 | $3,435,859 | BK |
| Carrollton Bank | Carrollton, IL | 01-01-1877 | $3,339,855 | BK |
| Wheaton Bank & Trust, National Association | Wheaton, IL | 05-17-1993 | $3,217,211 | BK |
| State Bank of India | Chicago, IL | 07-05-1955 | $3,172,686 | BK |
| Banterra Bank | Marion, IL | 11-26-1955 | $3,081,020 | BK |
| Lakeside Bank | Chicago, IL | 04-01-1966 | $2,642,335 | BK |
| Old Plank Trail Community Bank, National Association | New Lenox, IL | 03-16-2006 | $2,630,890 | BK |
| Republic Bank of Chicago | Oak Brook, IL | 12-01-1964 | $2,626,575 | BK |