Or by the first letter of a Bank Name
| Headquarters | Date Established | Assets (1000s) | Type | |
|---|---|---|---|---|
| Farmers and Merchants Savings Bank | Iowa City, IA | 09-25-1901 | $123,102 | BK |
| United Bank & Trust Co. | Marshalltown, IA | 06-21-2002 | $122,915 | BK |
| Twin Cedars Bank | Bussey, IA | 03-27-1931 | $121,993 | BK |
| Cedar Valley Bank & Trust | La Porte City, IA | 07-06-1906 | $121,368 | BK |
| First Community Bank | Newell, IA | 01-01-1912 | $116,939 | BK |
| RIVER VALLEY | AMES, IA | 01-01-1961 | $113,839 | CU |
| Security State Bank | Radcliffe, IA | 10-14-1914 | $113,729 | BK |
| Security State Bank | Algona, IA | 03-01-1931 | $113,143 | BK |
| Maynard Savings Bank | Maynard, IA | 01-01-1895 | $110,766 | BK |
| White State Bank | South English, IA | 01-01-1908 | $105,289 | BK |
| ADVANTAGE | Newton, IA | 01-01-1937 | $103,682 | CU |
| Sibley State Bank | Sibley, IA | 01-01-1894 | $103,588 | BK |
| Community Bank of Oelwein | Oelwein, IA | 10-01-1998 | $103,468 | BK |
| FNNB Bank | Newton, IA | 03-28-1932 | $102,324 | BK |
| Breda Savings Bank | Breda, IA | 01-01-1890 | $99,970 | BK |