Grinnell State Bank will be closed Thursday, July 4, 2019 in observance of Independence Day. Any transactions after closing on Wednesday, July 3, 2019 will post to your account on Friday, July 5, 2019.  This effects all wires/ACH files.

*Our Marengo Branch will be closing the lobby and drive-up at 4pm on Wednesday, July 3rd in observance of the Marengo 3rd of July Celebration.

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Genuinely Local Since 1925
24/7 GSB Telebanking
Balances, Transfers, & Account Information
(800)­  411-­9331
Pin #: Last 4 Digits of Social Security
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

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