Bank TrailWest Bank
TrailWest Bank is a federally insured bank based in Lolo, Montana.
- Type
- Bank
- Charter
- State-chartered commercial bank, not a Federal Reserve member
- Primary regulator
- FDIC
- Established
- May 17, 1982
- Headquarters
- Lolo, MT
- FDIC certificate #
- 23806
- Fed RSSD ID
- 615954
- Holding company
- Bitterroot Holding Co
- Website
- www.trailwest.bank
Source: U.S. FDIC BankFind & NCUA 5300 Call Report (public data). Data sources · Data as of Q1 2026
Branches by state
TrailWest Bank operates 15 branch locations in Montana. Select a state to drill down to its towns and individual branches.
Ownership
TrailWest Bank is owned by Bitterroot Holding Co, which also owns 1 other institution. See the full ownership & merger history.
TrailWest Bank financial summary
Other banks in Montana
Federally insured banks headquartered in Montana, by total assets.
- Glacier Bank $31.72B
- First Interstate Bank $26.36B
- Stockman Bank of Montana $7.68B
- Opportunity Bank of Montana $2.09B
- Independence Bank $1.37B
- The Yellowstone Bank $1.34B
- Bank of Bridger, National Association $791.9M
- Farmers State Bank $784.8M
Similar-size banks
Institutions close to TrailWest Bank’s $1.09B in assets.
- First National Bank, Ames, Iowa $1.09B
- United Bank of Michigan $1.09B
- The Converse County Bank $1.09B
- The Monticello Banking Company $1.09B
- First National Bank $1.09B
- Commercial Bank & Trust Co. $1.1B
Also owned by Bitterroot Holding Co
- Little Horn State Bank $405.8M