Banks in Lewis and Clark County, Montana
25 active bank branches operated by 13 institutions, per FDIC records.
Active branches
25
Banks present
13
Deposits (2025)
$2.4B
Closings since 2020
12
6 openings
Largest banks by deposits in Lewis and Clark County (2025)
| Bank | Deposits | Share | Branches |
|---|---|---|---|
| Glacier Bank | $559M | 23.5% | 4 |
| First Interstate Bank | $428M | 18% | 3 |
| Opportunity Bank of Montana | $351M | 14.7% | 4 |
| Stockman Bank of Montana | $310M | 13% | 3 |
| Wells Fargo | $300M | 12.6% | 2 |
| U.S. Bank | $219M | 9.2% | 1 |
| Ascent Bank | $94M | 3.9% | 2 |
| Citizens Alliance Bank | $41M | 1.7% | 1 |
| Chase Bank | $28M | 1.2% | 1 |
| Farmers State Bank | $25M | 1.1% | 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.