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Grinnell State Bank
✓ FDIC-insured · Active FDIC Certificate #11347
Grinnell State Bank is an FDIC-insured state-chartered bank that is not a Federal Reserve member (supervised by the FDIC), headquartered in Grinnell, Iowa, established in 1925. As of the 06/30/2026 FDIC call report, it reported $499M in total assets and $347M in deposits. FDIC location data lists 4 offices in Iowa. The FDIC classifies it as a community bank. It is owned by the holding company GRINNELL BANCSHARES INC (Grinnell, IA).
Financial data as of the 06/30/2026 FDIC call report.
Where it operates
All 4 of Grinnell State Bank's FDIC-listed offices are in Iowa. Browse banks in Grinnell for other local options.
Branch locations
| Grinnell State Bank Marengo Branch · Full Service - Brick And Mortar | 1101 Court Ave Marengo, IA 52301 Map ↗ |
| Grinnell State Bank Polk City Branch · Full Service - Brick And Mortar | 205 Broadway St Polk City, IA 50226 Map ↗ |
| Grinnell State Bank Grinnell State Bank · Full Service - Brick And Mortar | 814 4th Ave Grinnell, IA 50112 Map ↗ |
| Grinnell State Bank Johnston Branch · Full Service - Brick And Mortar | 5601 Merle Hay Rd Johnston, IA 50131 Map ↗ |
Holding company: GRINNELL BANCSHARES INC
The FDIC lists GRINNELL BANCSHARES INC, based in Grinnell, IA, as the top holding company for Grinnell State Bank. It also owns one other FDIC-insured bank:
- The Colorado Bank and Trust Company of La Junta, La Junta, CO ($330M in assets)
FDIC deposit insurance applies separately to each insured bank charter, even when they share a holding company. Confirm the charter before you spread deposits.
Similar-size banks in Iowa
Active FDIC-insured banks headquartered in Iowa with total assets closest to Grinnell State Bank's $499M. See all banks in Iowa.
| Bank | HQ city | Assets | Offices |
|---|---|---|---|
| First Security Bank and Trust Company | Charles City | $538M | 8 |
| American Bank, National Association | Le Mars | $533M | 2 |
| Peoples Bank | Clive | $530M | 8 |
| The Shelby County State Bank | Harlan | $524M | 11 |
| Iowa Trust & Savings Bank | Emmetsburg | $522M | 4 |
| Ohnward Bank & Trust | Cascade | $499M | 6 |
| TruBank | Indianola | $495M | 8 |
| Security State Bank | Sutherland | $492M | 5 |
Grinnell State Bank: common questions
Is Grinnell State Bank FDIC-insured?
Yes. Grinnell State Bank is an active FDIC-insured institution, FDIC Certificate #11347. Deposits are insured up to $250,000 per depositor, per ownership category. You can confirm this on FDIC BankFind.
Where is Grinnell State Bank headquartered?
Grinnell State Bank is headquartered at 814 4th Ave, Grinnell, IA 50112, according to FDIC records.
How many branches does Grinnell State Bank have?
FDIC location data lists 4 offices for Grinnell State Bank, all in Iowa.
Who owns Grinnell State Bank?
The FDIC lists GRINNELL BANCSHARES INC of Grinnell, IA as the top holding company for Grinnell State Bank. The same holding company owns 1 other FDIC-insured bank.
Source: FDIC BankFind Suite (institution, location, and call report data). BankNearMe.com does not rank or rate banks.