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BankSonar

First Interstate Bank

Billings, MT · State member commercial bank

65

Sonar Score

Stable

out of 100 · from public FDIC data

Reported March 31, 2026. The Sonar Score is an informational signal from public FDIC data — not a rating or financial advice.

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Key figures

Total assets
$26.4B
Total deposits
$22.2B
Branches
279
Return on assets
1.02%
Return on equity
8.11%
Charter type
State member commercial bank
Established
1916
FDIC cert #
1105

How the 65 breaks down

Capital adequacyweight 40%

Capital ratio not reported.

Profitability (ROA)weight 30%

Strong returns on its asset base.

Return on equityweight 15%

Positive but moderate equity returns.

Scale & stabilityweight 15%

Large, diversified balance sheet.

Read the full Sonar Score methodology →

Your deposits at First Interstate Bank

First Interstate Bank is an FDIC-insured institution (Cert #1105). Deposits are insured up to $250,000 per depositor, per ownership category, by the full faith and credit of the US government. Learn how to maximize your coverage →

50 branch locations

21783 Us Highway 65

Princeton, MO 64673

2100 Commerce Dr

Red Oak, IA 51566

648 Mount Rushmore Rd

Custer, SD 57730

201 N Main St

Chariton, IA 50049

100 E South St

Mount Ayr, IA 50854

3 S Woodard Ave

Absarokee, MT 59001

306 Spokane Ave

Whitefish, MT 59937

800 Grand Dr

Bigfork, MT 59911

2 Main St

Kalispell, MT 59901

207 W Callender St

Livingston, MT 59047

101 E Front St

Missoula, MT 59802

602 N Broadway Ave

Red Lodge, MT 59068

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