Billings, MT
Bank First Interstate Bank
First Interstate Bank is a federally insured bank based in Billings, Montana.
- Type
- Bank
- Charter
- State-chartered commercial bank, Federal Reserve member
- Primary regulator
- FED
- Established
- October 9, 1916
- Headquarters
- Billings, MT
- FDIC certificate #
- 1105
- Fed RSSD ID
- 659855
- Holding company
- First Intrst Bancsystem
- Website
- www.firstinterstatebank.com
$26.36B
Total assets Data as of Q1 2026
$22.2B
Total deposits Data as of Q1 2026
279
Branch locations Data as of Q1 2026
$67.3M
Net income Data as of Q1 2026
1.02%
Return on assets Data as of Q1 2026
Source: U.S. FDIC BankFind & NCUA 5300 Call Report (public data). Data sources · Data as of Q1 2026
Branches by state
First Interstate Bank operates 279 branch locations across 11 states. Select a state to drill down to its towns and individual branches.
South Dakota46 branches Iowa45 branches Montana44 branches Nebraska33 branches Oregon33 branches Idaho20 branches Colorado19 branches Washington17 branches Wyoming15 branches Missouri6 branches Minnesota1 branch
Ownership
First Interstate Bank is owned by First Intrst Bancsystem. See the full ownership & merger history.
First Interstate Bank financial summary
Other banks in Montana
Federally insured banks headquartered in Montana, by total assets.
- Glacier Bank $31.72B
- Stockman Bank of Montana $7.68B
- Opportunity Bank of Montana $2.09B
- Independence Bank $1.37B
- The Yellowstone Bank $1.34B
- TrailWest Bank $1.09B
- Bank of Bridger, National Association $791.9M
- Farmers State Bank $784.8M
Similar-size banks
Institutions close to First Interstate Bank’s $26.36B in assets.
- Customers Bank $25.86B
- Renasant Bank $27.09B
- Ameriprise Bank, FSB $25.51B
- WesBanco Bank, Inc. $27.42B
- Charles Schwab Premier Bank, SSB $27.44B
- Provident Bank $25.19B