Banks in Sweet Grass County, Montana
3 active bank branches operated by 3 institutions, per FDIC records.
Active branches
3
Banks present
3
Deposits (2025)
$168M
Closings since 2020
0
0 openings
Largest banks by deposits in Sweet Grass County (2025)
| Bank | Deposits | Share | Branches |
|---|---|---|---|
| Opportunity Bank of Montana | $70M | 41.4% | 1 |
| Citizens Bank & Trust Company | $64M | 38.3% | 1 |
| American Bank | $34M | 20.3% | 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.