Or by the first letter of a Bank Name
| Headquarters | Date Established | Assets (1000s) | Type | |
|---|---|---|---|---|
| The Clinton National Bank | Clinton, IA | 05-01-1865 | $400,129 | BK |
| The Libertyville Savings Bank | Fairfield, IA | 09-16-1901 | $388,660 | BK |
| Hardin County Savings Bank | Eldora, IA | 01-01-1868 | $378,908 | BK |
| Earlham Savings Bank | West Des Moines, IA | 01-01-1931 | $373,935 | BK |
| First Iowa State Bank | Albia, IA | 05-12-1930 | $369,405 | BK |
| First State Bank | Lynnville, IA | 01-01-1912 | $366,709 | BK |
| Iowa State Bank | Clarksville, IA | 01-01-1918 | $362,316 | BK |
| Farmers Trust and Savings Bank | Buffalo Center, IA | 01-01-1914 | $352,054 | BK |
| Premier Bank | Dubuque, IA | 10-13-1998 | $347,464 | BK |
| PREMIER | Des Moines, IA | 01-01-1933 | $344,384 | CU |
| Citizens First Bank | Clinton, IA | 03-14-2000 | $339,311 | BK |
| New Albin Savings Bank | New Albin, IA | 01-01-1898 | $337,277 | BK |
| Kerndt Brothers Savings Bank | Lansing, IA | 01-14-1908 | $332,481 | BK |
| American State Bank | Osceola, IA | 04-23-1987 | $330,161 | BK |
| Community State Bank | Spencer, IA | 01-01-1914 | $318,728 | BK |