Every FDIC-insured bank branch in Story County, Iowa as of June 30, 2025. County land area: 573 square miles, 6.5 branches per 100 sq mi.
| Institution | Branches | Deposits |
|---|---|---|
| VISIONBANK OF IOWA | 4 | $301.3M |
| South Story Bank & Trust | 4 | $339.5M |
| First Interstate Bank | 3 | $137.5M |
| First National Bank, Ames, Iowa | 3 | $635.5M |
| Exchange State Bank | 2 | $65.2M |
| Availa Bank | 2 | $295.9M |
| GNB Bank | 2 | $36.2M |
| Security State Bank | 2 | $31.8M |
| Fidelity Bank | 2 | $26.1M |
| U.S. Bank National Association | 2 | $349.4M |
| Central State Bank | 1 | $77.2M |
| TS Bank | 1 | $5.3M |
| State Bank & Trust Co. | 1 | $171.8M |
| Maxwell State Bank | 1 | $23.6M |
| BMO Bank National Association | 1 | $29.7M |
| Great Southern Bank | 1 | $0K |
| Northwest Bank | 1 | $33.8M |
| Wells Fargo Bank, National Association | 1 | $260.5M |
| Midwest Heritage Bank, FSB | 1 | $20.1M |
| Reliance State Bank | 1 | $103.7M |
| Bankers Trust Company | 1 | $147.2M |