We have received multiple reports that an individual has been posing as our institution and stating that the people they are contacting have a card that is compromised. As a reminder, Grinnell State Bank will never call you and request your personal information, for any reason.

We will be CLOSED on Monday, January 19, 2026 in observance of Martin Luther King Jr Day.

Any transactions after closing Friday, January 16 will post to your account on Tuesday, January 20.*

*This affects all wires/ACH files.

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You are advised to not include sensitive or confidential information (i.e. Social Security #, account #’s or pass code ID information etc.) within any “unencrypted” email communication. Please be advised that contact forms are received during normal business hours. If you have not received a response within 48 hours, please call the bank at 800-236-3187.

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GRINNELL

814 4th Ave
Grinnell, IA 50112
(641) 236-3174

JOHNSTON

5601 Merle Hay Rd
Johnston, IA 50131
(515) 278-6300

MARENGO

1101 Court Ave
Marengo, IA 52301
(319) 642-5511

POLK CITY

205 Broadway St
Polk City, IA 50226
(515) 984-6211