Banks in O'Brien County, Iowa
13 active bank branches operated by 9 institutions, per FDIC records.
Active branches
13
Banks present
9
Deposits (2025)
$994M
Closings since 2020
0
0 openings
Largest banks by deposits in O'Brien County (2025)
| Bank | Deposits | Share | Branches |
|---|---|---|---|
| Security State Bank | $243M | 24.4% | 2 |
| Savings Bank | $160M | 16.1% | 2 |
| Iowa State Bank | $151M | 15.2% | 3 |
| Citizens State Bank | $140M | 14.1% | 1 |
| Peoples Bank | $118M | 11.9% | 1 |
| Sanborn Savings Bank | $65M | 6.5% | 1 |
| The Security National Bank of Sioux City, Iowa | $57M | 5.7% | 1 |
| United Community Bank | $31M | 3.2% | 1 |
| The First National Bank of Primghar | $29M | 2.9% | 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.