Or by the first letter of a Bank Name
| Headquarters | Date Established | Assets (1000s) | Type | |
|---|---|---|---|---|
| ASCENTRA | Bettendorf, IA | 01-01-1950 | $571,155 | CU |
| Washington State Bank | Washington, IA | 04-18-1932 | $568,071 | BK |
| Citizens State Bank | Monticello, IA | 03-11-1931 | $563,579 | BK |
| Peoples Savings Bank | Indianola, IA | 11-20-1998 | $553,083 | BK |
| First Security Bank and Trust Company | Charles City, IA | 07-14-1903 | $549,339 | BK |
| Central State Bank | State Center, IA | 01-01-1902 | $542,562 | BK |
| The Shelby County State Bank | Harlan, IA | 08-02-1909 | $529,674 | BK |
| American Bank, National Association | Le Mars, IA | 01-01-1887 | $528,582 | BK |
| Iowa Trust & Savings Bank | Emmetsburg, IA | 07-01-1929 | $528,423 | BK |
| South Ottumwa Savings Bank | Ottumwa, IA | 01-01-1903 | $526,075 | BK |
| Connection Bank | Fort Madison, IA | 07-01-1854 | $514,811 | BK |
| Grinnell State Bank | Grinnell, IA | 10-25-1925 | $500,003 | BK |
| Midwest Heritage Bank, FSB | West Des Moines, IA | 04-01-1930 | $491,513 | BK |
| Peoples Bank | Clive, IA | 03-17-1917 | $485,897 | BK |
| American Bank and Trust Company, National Association | Davenport, IA | 01-05-1999 | $483,649 | BK |