BranchWatch

First Interstate Bank

Headquartered in Billings, MT. Part of First Interstate Bancsystem, Inc. FDIC certificate #1105 · Federal Reserve RSSD 659855.

Total assets
$26.4B
Deposits
$22.2B
Q1 2026
Active branches
274
Closings since Jan 2020
45
11 openings since Jan 2020

Financial snapshot — Q1 2026

All quarters
Net income (quarter)
$67M
Return on assets
1.02%
Return on equity
8.11%
Noncurrent loan rate
1.05%

Deposits by year (Summary of Deposits)

11
2019
13
2020
16
2021
27
2022
24
2023
23
2024
23
2025

Values in $ billions, June 30 of each year.

Closings by year

6
2020
4
2021
18
2022
7
2023
4
2024
6
2026

Openings by year

2
2020
2
2021
3
2022
1
2023
1
2024
1
2025
1
2026

Other network changes since 2020

  • 62 branch relocations
  • 176 branches acquired through purchases or mergers

Branches by state

Recent closings (30 of 45)

All figures transcribed from FDIC BankFind Suite records: structure-change history, quarterly financial reports and the annual Summary of Deposits · bank site: www.firstinterstatebank.com.