Or by the first letter of a Bank Name
| Headquarters | Date Established | Assets (1000s) | Type | |
|---|---|---|---|---|
| The Clay City Banking Co. | Clay City, IL | 07-05-1892 | $253,333 | BK |
| ILLINOIS STATE | Normal, IL | 01-01-1960 | $248,625 | CU |
| Security Bank, s.b. | Springfield, IL | 01-01-1906 | $244,493 | BK |
| BankChampaign, National Association | Champaign, IL | 03-14-1977 | $242,849 | BK |
| Security Savings Bank | Monmouth, IL | 01-01-1882 | $241,397 | BK |
| Bank of Farmington | Farmington, IL | 01-01-1903 | $240,080 | BK |
| First Federal Savings and Loan Association of Central Illinois, S.B. | Shelbyville, IL | 01-01-1906 | $234,975 | BK |
| Crossroads Bank | Effingham, IL | 03-12-1974 | $234,740 | BK |
| Warren-Boynton State Bank | New Berlin, IL | 08-29-1877 | $234,520 | BK |
| Anna-Jonesboro National Bank | Anna, IL | 01-01-1900 | $234,192 | BK |
| West Central Bank | Ashland, IL | 06-12-1933 | $232,236 | BK |
| Farmers State Bank of Hoffman | Hoffman, IL | 01-01-1911 | $232,056 | BK |
| Eagle Valley Bank | Griggsville, IL | 08-03-1893 | $229,624 | BK |
| First Bank and Trust Company of Illinois | Palatine, IL | 12-20-1962 | $228,579 | BK |
| STALEY | DECATUR, IL | 01-01-1930 | $228,484 | CU |