Or by the first letter of a Bank Name
| Headquarters | Date Established | Assets (1000s) | Type | |
|---|---|---|---|---|
| Liberty National Bank | Sioux City, IA | 03-17-2003 | $588,247 | BK |
| First Security Bank and Trust Company | Charles City, IA | 07-14-1903 | $572,576 | BK |
| ASCENTRA | Bettendorf, IA | 01-01-1950 | $568,406 | CU |
| Washington State Bank | Washington, IA | 04-18-1932 | $568,129 | BK |
| Citizens State Bank | Monticello, IA | 03-11-1931 | $559,311 | BK |
| American Bank, National Association | Le Mars, IA | 01-01-1887 | $551,879 | BK |
| Central State Bank | State Center, IA | 01-01-1902 | $551,738 | BK |
| South Ottumwa Savings Bank | Ottumwa, IA | 01-01-1903 | $547,692 | BK |
| Iowa Trust & Savings Bank | Emmetsburg, IA | 07-01-1929 | $542,901 | BK |
| The Shelby County State Bank | Harlan, IA | 08-02-1909 | $541,168 | BK |
| Connection Bank | Fort Madison, IA | 07-01-1854 | $518,287 | BK |
| Grinnell State Bank | Grinnell, IA | 10-25-1925 | $505,193 | BK |
| American Bank and Trust Company, National Association | Davenport, IA | 01-05-1999 | $501,067 | BK |
| Midwest Heritage Bank, FSB | West Des Moines, IA | 04-01-1930 | $489,559 | BK |
| Peoples Bank | Clive, IA | 03-17-1917 | $481,745 | BK |