Banks in Rosebud County, Montana
4 active bank branches operated by 3 institutions, per FDIC records.
Active branches
4
Banks present
3
Deposits (2026)
$295M
Closings since 2020
1
0 openings
Largest banks by deposits in Rosebud County (2026)
| Bank | Deposits | Share | Branches |
|---|---|---|---|
| First State Bank of Forsyth | $143M | 48.6% | 1 |
| First Interstate Bank | $136M | 46.1% | 2 |
| Opportunity Bank of Montana | $16M | 5.3% | 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.