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Gallatin County, MT Bank Deposit Market Share

Glacier Bank holds the largest share of deposits in Gallatin County, MT, 35.0%, followed by Stockman Bank of Montana (13.2%) and First Interstate Bank (13.2%). 16 institutions hold $5.24B at 41 offices as of June 30, 2026, up 4.3% from 2025.

Institutions: 16 Offices: 41 Deposits: $5.24B Survey: FDIC Summary of Deposits, June 30, 2026

Largest share changes since 2025

Gained: Stockman Bank of Montana (1.31 points); Wells Fargo Bank, N.A. (1.09 points); JPMorgan Chase Bank, N.A. (0.27 points).

Lost: Glacier Bank (-2.20 points); First Interstate Bank (-0.45 points); American Bank (-0.32 points).

# Institution Offices Deposits Market share Share change from 2025 Deposit change
1 Glacier Bank 9 $1.84B 35.03% -2.20 pts -1.9%
2 Stockman Bank of Montana 5 $690.0M 13.17% +1.31 pts 15.8%
3 First Interstate Bank 4 $689.8M 13.16% -0.45 pts 0.8%
4 Wells Fargo Bank, N.A. 2 $530.0M 10.11% +1.09 pts 16.9%
5 American Bank 3 $341.0M 6.51% -0.32 pts -0.6%
6 U.S. Bank N.A. 2 $331.2M 6.32% +0.18 pts 7.3%
7 Manhattan Bank 4 $252.7M 4.82% +0.21 pts 9.0%
8 Opportunity Bank of Montana 3 $248.8M 4.75% -0.03 pts 3.6%
9 Bank of Bozeman 1 $96.4M 1.84% +0.12 pts 11.7%
10 The Yellowstone Bank 1 $71.5M 1.36% -0.12 pts -4.0%
11 JPMorgan Chase Bank, N.A. 1 $63.1M 1.20% +0.27 pts 34.5%
12 Madison Valley Bank 2 $35.8M 0.68% -0.08 pts -6.2%
13 First Western Trust Bank 1 $22.8M 0.43% +0.03 pts 11.7%
14 First Montana Bank, Inc. 1 $19.2M 0.37% -0.07 pts -12.7%
15 Bank of the Rockies 1 $7.3M 0.14% -0.01 pts -4.6%
16 Flanagan State Bank 1 $5.4M 0.10% +0.08 pts 322.5%

About this list

Deposits are those held at each institution's offices in Gallatin County as of June 30, 2026, from the FDIC Summary of Deposits, whatever state the institution is headquartered in. Market share is the institution's deposits divided by all deposits in the market. Shares are by bank charter, not rolled up to the holding company, and cover FDIC-insured institutions only, so credit unions are not included. Each office is placed in its county and metro area by the FDIC branch directory; the few offices the directory does not list are left out of the market and of every share.

Share change compares the institution's share in 2025 and 2026 in percentage points. Deposit change compares its deposits here in the two years and includes deposits that moved through mergers and branch sales; "New" means it had no offices here a year earlier. Offices that closed during the year are placed by their ZIP code or city.

Wider markets

Montana deposits by institution Bozeman, MT metro area Montana bank directory

Other counties in Montana

Yellowstone CountyFlathead CountyMissoula CountyLewis And Clark CountyCascade CountyRavalli CountyCuster CountySilver Bow CountyHill CountyLake CountyRichland CountyPark CountyFergus CountyBeaverhead CountyLincoln CountyValley CountySanders CountyRoosevelt CountyDawson CountyBig Horn CountyMadison CountyRosebud CountySheridan CountyStillwater CountyPhillips CountyCarbon CountyPondera CountyTeton CountyGlacier CountyToole CountyPowell CountySweet Grass CountyDeer Lodge CountyFallon CountyChouteau CountyDaniels CountyJefferson CountyBroadwater CountyBlaine CountyJudith Basin County

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