Banks in Gallatin County, Montana
42 active bank branches operated by 17 institutions, per FDIC records.
Active branches
42
Banks present
17
Deposits (2026)
$5.2B
Closings since 2020
7
8 openings
Largest banks by deposits in Gallatin County (2026)
| Bank | Deposits | Share | Branches |
|---|---|---|---|
| Glacier Bank | $1.8B | 35% | 9 |
| Stockman Bank of Montana | $690M | 13.2% | 5 |
| First Interstate Bank | $690M | 13.2% | 4 |
| Wells Fargo | $530M | 10.1% | 2 |
| American Bank | $341M | 6.5% | 3 |
| U.S. Bank | $331M | 6.3% | 2 |
| Manhattan Bank | $253M | 4.8% | 4 |
| Opportunity Bank of Montana | $249M | 4.7% | 3 |
| Bank of Bozeman | $96M | 1.8% | 1 |
| The Yellowstone Bank | $71M | 1.4% | 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.