Or by the first letter of a Bank Name
| Headquarters | Date Established | Assets (1000s) | Type | |
|---|---|---|---|---|
| TruBank | Indianola, IA | 01-01-1883 | $476,485 | BK |
| TS Bank | Treynor, IA | 06-01-1923 | $472,359 | BK |
| NSB Bank | Mason City, IA | 01-01-1933 | $470,503 | BK |
| Iowa State Bank | Algona, IA | 01-01-1928 | $465,181 | BK |
| Rolling Hills Bank & Trust | Atlantic, IA | 07-01-1876 | $464,846 | BK |
| Iowa State Bank | Des Moines, IA | 04-14-1941 | $461,010 | BK |
| Ohnward Bank & Trust | Cascade, IA | 02-28-1903 | $459,480 | BK |
| Security State Bank | Sutherland, IA | 01-01-1931 | $457,240 | BK |
| Raccoon Valley Bank | Perry, IA | 01-01-1927 | $454,246 | BK |
| Central State Bank | Coralville, IA | 11-12-1931 | $453,274 | BK |
| Home State Bank | Jefferson, IA | 01-01-1934 | $443,135 | BK |
| FreedomBank | Elkader, IA | 01-01-1903 | $435,777 | BK |
| Northeast Security Bank | Sumner, IA | 01-01-1888 | $435,586 | BK |
| Maquoketa State Bank | Maquoketa, IA | 09-02-1958 | $421,136 | BK |
| Waukon State Bank | Waukon, IA | 01-01-1871 | $412,575 | BK |