Every FDIC-insured bank branch in Gallatin County, Montana as of June 30, 2025. County land area: 2,605 square miles, 1.6 branches per 100 sq mi.
| Institution | Branches | Deposits |
|---|---|---|
| Glacier Bank | 9 | $1.87B |
| Stockman Bank of Montana | 5 | $595.6M |
| First Interstate Bank | 4 | $684.0M |
| Manhattan Bank | 4 | $231.8M |
| American Bank | 3 | $343.1M |
| Opportunity Bank of Montana | 3 | $240.1M |
| Madison Valley Bank | 2 | $38.2M |
| Wells Fargo Bank, National Association | 2 | $453.5M |
| U.S. Bank National Association | 2 | $308.6M |
| Flanagan State Bank | 1 | $1.3M |
| The Yellowstone Bank | 1 | $74.4M |
| Bank of The Rockies | 1 | $7.7M |
| First Montana Bank, Inc. | 1 | $22.0M |
| First Western Trust Bank | 1 | $20.4M |
| Bank of Bozeman | 1 | $86.3M |
| JPMorgan Chase Bank, National Association | 1 | $46.9M |