Grinnell State Bank will be closing at 12 PM on Tuesday, December 24, 2019 in observance of CHRISTMAS EVE. We will be CLOSED on Wednesday, December 25, 2019 in observance of CHRISTMAS. All transactions received by 12 PM on Tuesday, December 24th will be processed.  We will return to normal business hours Thursday, December 26, 2019.


Grinnell State Bank will be closing the lobby at 12 PM and the drive-up will remain open until 3 PM on Tuesday, December 31, 2019, in observance of NEW YEAR'S EVE. We will be CLOSED on Wednesday, January 1, 2020 in observance of NEW YEAR'S DAY. Any transactions received by 3 PM on Tuesday, December 31st will be processed.  We will return to normal business hours on Thursday, January 2nd.


*All ACH Files and Remote Deposit Files must be submitted for processing by 12:00 pm on Tuesday, December 24th &  by 3:00pm on Monday, December 31st to credit for that business day.

Genuinely Local Since 1925
24/7 GSB Telebanking
Balances, Transfers, & Account Information
(800)­  411-­9331
Pin #: Last 4 Digits of Social Security
814 4th Ave
Grinnell, IA 50112
(641)­  236-­3174
5601 Merle Hay Rd
Johnston, IA 50131
(515)­  278-­6300
1101 Court Ave
Marengo, IA 52301
(319)­  642-­5511
Polk City
205 Broadway St
Polk City, IA 50226
(515)­  984-­6211

Online Statements

Sign up for to view your statements online Today!
Learn More

Mobile Wallet

Click for details
Learn More

Open Your Account Now!

Get Started Now!
Learn More

Get to Know what Grinnell State Bank is all about!