Lewis and Clark County, Montana, a core county of the Helena, MT market, holds $2.6B in deposits across 13 insured institutions and 25 branches. Glacier Bank is the largest deposit holder at 24.5% share. The top three banks hold 56% of deposits, which places the county in the Moderate band. Deposits have grown 25.6% since 2021 while the branch count fell by 10.7%. It produced $4.5B of real gross domestic product in 2024, ranking #642 of the 1,523 ranked counties by economic output.
Ranks show where the county stands among the 1,523 ranked counties (those within a Combined or Metropolitan Statistical Area that have a branch). They describe relative position, not a rating of market quality or suitability.
Deposit trend
Branches: 28 in 2021 to 25 in 2026. Institutions: 12 to 13. Top-three share: 66% to 56%.
Institutions by deposits
| Institution | Deposits | Share | 5‑yr deposits |
|---|---|---|---|
| Glacier Bank | $639M | 24.5% | +12% |
| First Interstate Bank | $466M | 17.8% | +9% |
| Opportunity Bank of Montana | $369M | 14.1% | +34% |
| Stockman Bank of Montana | $342M | 13.1% | +170% |
| Wells Fargo Bank | $310M | 11.9% | -16% |
| U.S. Bank | $264M | 10.1% | +45% |
| Ascent Bank | $92M | 3.5% | +34% |
| Citizens Alliance Bank | $43M | 1.6% | +90% |
| JPMorgan Chase Bank | $31M | 1.2% | no 2021 presence |
| Farmers State Bank | $26M | 1.0% | +315% |
| Bank of The Rockies | $21M | 0.8% | -11% |
| Bravera Bank | $5M | 0.2% | no 2021 presence |
| First Montana Bank, Inc. | $4M | 0.1% | -49% |
The 13 insured institutions with a branch presence in this county, per the FDIC Summary of Deposits, June 30, 2026. Five-year change compares the same institution’s county deposits in 2021 and 2026. Institutions are tracked by FDIC certificate number, and where an institution acquired another bank, the acquired bank’s prior deposits are folded into the baseline so the change reflects the combined, continuing franchise rather than reading as new. “No 2021 presence” means neither the institution nor a bank it later absorbed reported deposits in this county that year. Deposit figures are nominal and are not adjusted for inflation.
Part of the Helena market
Lewis and Clark County is one of 3 counties that make up the Helena, MT market, a Metropolitan Statistical Area (ranked #271 of 293 U.S. markets by economic output). It produces 89.4% of the market’s output and holds 91.6% of its deposits.
| Measure | Lewis and Clark County | Share of parent market |
|---|---|---|
| 2024 GDP | $4.5B | 89.4% |
| Deposits | $2.6B | 91.6% |
| Population | 75,331 | 77.5% |
View the full Helena market profile →
Recruiting in Lewis and Clark County
Deposits are split among a moderate number of institutions. Who holds the deposits, and how contested the market is, shapes both the runway for growth and the competition you would be recruiting against. We recruit commercial relationship managers, banking teams, and market leaders for banks building in markets like Lewis and Clark County.
See how we help banks recruit commercial banking talent