Banks in Mercer County, North Dakota
8 active bank branches operated by 3 institutions, per FDIC records.
Active branches
8
Banks present
3
Deposits (2026)
$369M
Closings since 2020
1
1 openings
Largest banks by deposits in Mercer County (2026)
| Bank | Deposits | Share | Branches |
|---|---|---|---|
| Union State Bank of Hazen | $227M | 61.5% | 4 |
| The Union Bank | $87M | 23.6% | 3 |
| First Security Bank - West | $55M | 14.9% | 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.