Banks in Custer County, Montana
5 active bank branches operated by 3 institutions, per FDIC records.
Active branches
5
Banks present
3
Deposits (2025)
$846M
Closings since 2020
0
0 openings
Largest banks by deposits in Custer County (2025)
| Bank | Deposits | Share | Branches |
|---|---|---|---|
| Stockman Bank of Montana | $630M | 74.5% | 3 |
| First Interstate Bank | $151M | 17.8% | 1 |
| U.S. Bank | $65M | 7.7% | 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.