Every FDIC-insured bank branch in Lewis and Clark County, Montana as of June 30, 2025. County land area: 3,458 square miles, 0.7 branches per 100 sq mi.
| Institution | Branches | Deposits |
|---|---|---|
| Opportunity Bank of Montana | 4 | $351.0M |
| Glacier Bank | 4 | $559.4M |
| First Interstate Bank | 3 | $428.3M |
| Stockman Bank of Montana | 2 | $310.4M |
| Ascent Bank | 2 | $93.9M |
| Wells Fargo Bank, National Association | 2 | $299.5M |
| Citizens Alliance Bank | 1 | $41.5M |
| Bank of The Rockies | 1 | $19.6M |
| Bravera Bank | 1 | $1.4M |
| Farmers State Bank | 1 | $25.4M |
| First Montana Bank, Inc. | 1 | $7.8M |
| JPMorgan Chase Bank, National Association | 1 | $27.8M |
| U.S. Bank National Association | 1 | $218.6M |