Or by the first letter of a Bank Name
| Headquarters | Date Established | Assets (1000s) | Type | |
|---|---|---|---|---|
| GREENSTATE | North Liberty, IA | 01-01-1938 | $10,640,947 | CU |
| Principal Bank | Des Moines, IA | 02-12-1998 | $8,794,109 | BK |
| VERIDIAN | WATERLOO, IA | 01-01-1934 | $7,960,129 | CU |
| Bankers Trust Company | Des Moines, IA | 06-01-1917 | $7,173,068 | BK |
| MidWestOne Bank | Iowa City, IA | 10-15-1934 | $6,231,161 | BK |
| Hills Bank and Trust Company | Hills, IA | 01-01-1904 | $4,586,865 | BK |
| West Bank | West Des Moines, IA | 01-01-1893 | $4,013,203 | BK |
| DUPACO COMMUNITY | Dubuque, IA | 01-01-1948 | $3,438,240 | CU |
| Northwest Bank | Spencer, IA | 12-30-1988 | $2,902,292 | BK |
| Cedar Rapids Bank and Trust Company | Cedar Rapids, IA | 09-14-2001 | $2,611,167 | BK |
| Quad City Bank and Trust Company | Bettendorf, IA | 01-07-1994 | $2,569,367 | BK |
| United Bank of Iowa | Ida Grove, IA | 02-04-1932 | $2,407,498 | BK |
| Central Bank | Storm Lake, IA | 01-01-1879 | $2,167,453 | BK |
| Bank Iowa | West Des Moines, IA | 03-07-1923 | $2,151,120 | BK |
| Luana Savings Bank | Luana, IA | 08-01-1908 | $2,087,762 | BK |