Grinnell State Bank
Headquarters: Grinnell, Iowa
Overview
Grinnell State Bank is an FDIC-insured bank headquartered in Grinnell, Iowa. It reported $496.79M in assets and $351.77M in deposits for the period ending March 31, 2026. Bankular currently lists 4 branch locations.
What Bankular checked
These dates identify the official records and review steps supporting this profile.
Quarterly change
What changed since the previous report
December 31, 2025 to March 31, 2026
These comparisons use consecutive official regulatory reporting periods. A change is descriptive and is not a recommendation or safety rating.
Financial indicators
Capital, profitability and credit quality
These are the latest reported capital, profitability and credit-quality measures available for this institution. Read the figures together rather than as a single safety rating.
Locations
Find a branch of Grinnell State Bank
Johnston Branch
5601 Merle Hay Rd, Johnston, Iowa, 50131
Full-service branch · Opened March 1, 1903
Main Office
814 4th Ave, Grinnell, Iowa, 50112
Full-service branch · Opened October 25, 1925
Marengo Branch
1101 Court Ave, Marengo, Iowa, 52301
Full-service branch · Opened January 7, 1929
Polk City Branch
205 Broadway St, Polk City, Iowa, 50226
Full-service branch · Opened December 3, 1997
Financial overview
Latest reported figures
Through March 31, 2026
Financial trends
How the balance sheet has changed
Compare recent quarters to see the direction of assets, deposits and loans.
| Quarter | Assets | Deposits | Net loans | ROA |
|---|---|---|---|---|
| March 31, 2026 | $496.79M | $351.77M | $361.16M | 0.76% |
| December 31, 2025 | $500.28M | $347.95M | $356.00M | 0.95% |
| September 30, 2025 | $483.01M | $320.06M | $362.64M | 0.89% |
| June 30, 2025 | $500.00M | $333.57M | $373.23M | 0.66% |
| March 31, 2025 | $505.19M | $342.86M | $381.26M | 0.99% |
| December 31, 2024 | $493.04M | $333.91M | $373.04M | 0.67% |
| September 30, 2024 | $508.26M | $344.34M | $374.64M | 0.61% |
| June 30, 2024 | $494.17M | $348.16M | $364.41M | 0.58% |
Size and reach
How this institution compares
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More on Grinnell State Bank
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Branch locations
4 listed locations.
Explore →Compare this institution
Compare size, financial metrics, rates and access.
Explore →State banking market
Explore institutions and deposit-market context in Iowa.
Explore →Grinnell banking market
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Explore →Rankings and research
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Explore →Sources and methodology
Review the official sources and reporting periods.
Explore →Frequently asked questions
Is Grinnell State Bank federally insured?
Yes. Bankular identifies this institution in FDIC records under certificate 11347.
Where is Grinnell State Bank headquartered?
Grinnell State Bank is headquartered in Grinnell, Iowa, at 814 4th Ave, Grinnell, Iowa, 50112.
How large is Grinnell State Bank?
It reported $496.79M in assets and $351.77M in deposits for the period ending March 31, 2026.
How many locations does Grinnell State Bank have?
Bankular currently lists 4 branch locations for this institution.
Data sources and methodology
Bankular combines official regulatory records with institution-published product information. The detailed sources are available below for readers who want to verify a figure.