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Temporary Closure Announcement

The lobby of our branch in Princeton, MO, will be closed March 28-31, 2023. Please use our drive-thru lane, which will be open 9 AM CT to 5 PM CT.


Good to have you with us.

If you’re new to First Interstate, an introduction is a good place to start. This video gives you some background on what makes us us; what we believe in and why.

Play Welcome Video

Our Story

This is what we’re all about.

People. Families. Businesses. Everyone and everything that makes up community. We are driven to continuously strengthen our relationship with you and our community. We do that by listening. By putting people first. By giving you the tools and the partnership you need to keep your everyday routine running right.

That could be something as basic as a checking account, or a mortgage, or even wealth management.
For a business, it could mean anything from a business checking account, to merchant services, to a commercial loan.

Ranked by Forbes
One of America’s Best Banks

Our Impact

Commitment at-a-glance.

Service to community has been at the core of our business for over 50 years — and we’re proud to see how it adds up every year. Check out some of 2021’s highlights below — and click here to see our full 2021 Community Scorecard.

First Interstate Bank commits 2% of its Net Income Before Taxes annually to charitable giving. In 2021, we donated $4.9 million to help make a difference in our communities.

Among the 1,039 local nonprofit organizations we supported, two-thirds of them focused on poverty and served low-to-moderate income individuals.

First Interstate pays nonprofits for its employees’ volunteer hours through our volunteer match program, enriching charitable organizations with much-needed support and financial resources.

Throughout what was certainly a challenging year, our employees showed great creativity and adaptability. The result? Safe volunteer opportunities and another big year of community giving.

Welcome to the family, Great Western Bank clients.

We’re always here to help — especially during your transition to First Interstate. If you have questions, feel free to contact us or click the links below:

View the Conversion Guide

Log Into Online Banking

Get the Mobile Banking App

Here for a new bank?

If you're interested in joining First Interstate, this is a good place to start. Personal or business banking, click through the links below:

Open a Personal Banking Account

Learn More About Business Banking

Our Footprint

Right where we need to be.

Our territory spans a wide range of geographies and economies — from flatlands to mountains, rural to urban, and everything in between. We’re proud of them all.

Our communities feature a diverse group of people — blue collar, white collar, and no collar whatsoever—with different needs. Our diverse products and services provide solutions to the varying needs of our communities and their people.

Find a First Interstate Near You

Our Tagline.

Built for You.

Everything we do as your community bank should be measured by these three words. From our earliest days in Sheridan, Wyoming, to present day across 14 states, we’ve taken time and care to right-size our approach to doing business, designing processes and services to address your unique needs.

Built for you.
From our earliest days serving hard-working communities, to designing our processes with your experience in mind.
We’re intentional about how we apply our time and talents. Always in service of a larger benefit; we thrive on your success.
You are a unique person. Your particular needs and pursuits deserve our focus and attention.