Or by the first letter of a Bank Name
| Headquarters | Date Established | Assets (1000s) | Type | |
|---|---|---|---|---|
| Fidelity Bank & Trust | Dubuque, IA | 04-20-1910 | $1,915,253 | BK |
| First Citizens Bank | Mason City, IA | 01-09-1892 | $1,864,064 | BK |
| Lincoln Savings Bank | Reinbeck, IA | 01-01-1902 | $1,854,395 | BK |
| COLLINS COMMUNITY | Cedar Rapids, IA | 01-01-1940 | $1,656,073 | CU |
| Availa Bank | Carroll, IA | 01-01-1870 | $1,634,579 | BK |
| The Security National Bank of Sioux City, Iowa | Sioux City, IA | 01-01-1884 | $1,622,872 | BK |
| Farmers State Bank | Waterloo, IA | 06-25-1903 | $1,620,041 | BK |
| CBI Bank & Trust | Muscatine, IA | 06-13-1933 | $1,558,469 | BK |
| Community State Bank | Ankeny, IA | 07-15-1960 | $1,508,218 | BK |
| American State Bank | Sioux Center, IA | 09-01-1913 | $1,454,233 | BK |
| Bank Midwest | Spirit Lake, IA | 01-01-1887 | $1,351,354 | BK |
| Iowa State Bank | Hull, IA | 01-01-1879 | $1,181,033 | BK |
| Two Rivers Bank & Trust | Burlington, IA | 05-02-2005 | $1,171,816 | BK |
| DU TRAC COMMUNITY | DUBUQUE, IA | 01-01-1946 | $1,149,746 | CU |
| First National Bank, Ames, Iowa | Ames, IA | 05-22-1903 | $1,082,567 | BK |