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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