Banks in O'Brien County, Iowa
13 active bank branches operated by 9 institutions, per FDIC records.
Active branches
13
Banks present
9
Deposits (2026)
$1.0B
Closings since 2020
0
0 openings
Largest banks by deposits in O'Brien County (2026)
| Bank | Deposits | Share | Branches |
|---|---|---|---|
| Security State Bank | $264M | 25.9% | 2 |
| Savings Bank | $163M | 16% | 2 |
| Citizens State Bank | $141M | 13.9% | 1 |
| Iowa State Bank | $138M | 13.5% | 3 |
| Peoples Bank | $125M | 12.2% | 1 |
| Sanborn Savings Bank | $67M | 6.5% | 1 |
| The Security National Bank of Sioux City, Iowa | $61M | 5.9% | 1 |
| United Community Bank | $32M | 3.1% | 1 |
| The First National Bank of Primghar | $30M | 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.