Banks in Lyon County, Iowa
11 active bank branches operated by 6 institutions, per FDIC records.
Active branches
11
Banks present
6
Deposits (2026)
$759M
Closings since 2020
0
0 openings
Largest banks by deposits in Lyon County (2026)
| Bank | Deposits | Share | Branches |
|---|---|---|---|
| Frontier Bank | $255M | 33.6% | 3 |
| Security Savings Bank | $173M | 22.8% | 3 |
| Premier Bank | $120M | 15.9% | 2 |
| U.S. Bank | $91M | 12% | 1 |
| Peoples Bank | $67M | 8.8% | 1 |
| American State Bank | $53M | 6.9% | 1 |
Deposit location reflects the office to which deposits are reported and may not represent the residence of depositors.
Cities and towns
Transcribed from FDIC BankFind Suite active-location records and the annual Summary of Deposits. County assignment follows the FDIC branch record.