Cornerstone State Bank
Montgomery, MN · State, non-member commercial bank
Sonar Score
Watch
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.
Key figures
- Total assets
- $243.1M
- Total deposits
- $221.5M
- Branches
- 7
- Return on assets
- 1.32%
- Return on equity
- 17.00%
- Charter type
- State, non-member commercial bank
- Established
- 1974
- FDIC cert #
- 21525
How the 64 breaks down
Capital ratio not reported.
Strong returns on its asset base.
Efficient use of shareholder capital.
Community-scale institution.
Your deposits at Cornerstone State Bank
Cornerstone State Bank is an FDIC-insured institution (Cert #21525). 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 →
7 branch locations
500 Main St
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415 N Main St
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