2011
Grinnell State Bank acquires three locations in Johnston, Polk City & Urbandale – formerly Polk County Bank
We will be CLOSED Friday, July 4, 2025 in observance of Independence Day.
Any transactions after closing Thursday, July 3, 2025 will post to your account on Monday, July 7, 2025.
*This affects all wires & ACH transactions.
Our Marengo Branch will close at 4pm on Thursday, July 3rd for the Marengo 3rd of July Parade.
IMPORTANT MESSAGE TO COMBAT SCAMS: Grinnell State Bank will never contact you and request your One-Time-Passcode for your online/mobile banking. If someone is claiming to be Grinnell State Bank and has requested this information, please hang up or ignore the text and call your local branch.
