Cornerstone State Bank
Montgomery, MN · State, non-member commercial bank
Sonar Score
Stable
out of 100 · from public FDIC data
Reported June 30, 2026. The Sonar Score is an informational signal from public FDIC data — not a rating or financial advice.
Key figures
- Total assets
- $247M
- Total deposits
- $223.9M
- Branches
- 7
- Return on assets
- 1.49%
- Return on equity
- 18.94%
- Charter type
- State, non-member commercial bank
- Established
- 1974
- FDIC cert #
- 21525
How the 70 breaks down
Well-capitalized by regulatory thresholds.
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
Madison Lake, MN 56063
401 4th St Nw
Montgomery, MN 56069
600 Parkway Ave
Eagle Lake, MN 56024
451 3rd St
Green Isle, MN 55338
1516 Cloquet Ave
Cloquet, MN 55720
415 N Main St
Le Sueur, MN 56058
406 E Poplar St
Belle Plaine, MN 56011
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