Grinnell State Bank
1 detailed location
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Search detailed locations Banks and Bank Branches in Marengo, Iowa
The FDIC reported 2 deposit-reporting offices from 2 institutions in Marengo as of June 30, 2025. Bankular currently provides 2 detailed location pages with addresses, maps and directions.
FDIC-reported offices2
Institutions reporting2
Detailed location pages2
Reported branch deposits$113.8M
SOD reporting dateJune 30, 2025
Market analysis
What the deposit data shows
Largest institutionGrinnell State Bank64.82% of deposits
Top three share100.00%
Deposit HHI5,439Higher concentration
Current detailed pages2Matches the June 2025 SOD office count
Grinnell State Bank held 64.82% of reported branch deposits in Marengo. The three largest institutions together held 100.00%. Bankular places the resulting HHI of 5,439 in its higher concentration descriptive band.
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Detailed bank locations in Marengo
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Institutions with validated location pages
Keystone Savings Bank
1 detailed location
Location pages
Detailed bank locations in Marengo
Grinnell State Bank
1 detailed locationKeystone Savings Bank
1 detailed locationLocal deposit market
Reported offices, deposits and market share
| Institution | Reported offices | Deposits | Share |
|---|---|---|---|
| Grinnell State Bank | 1 | $73.8M | 64.82% |
| Keystone Savings Bank | 1 | $40.0M | 35.18% |