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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About Us

Your Local Community Bank

Grinnell State Bank was organized in 1925 by Grinnell businessmen to be an independent community bank and is still fulfilling that role today. The Jones Family has owned and operated the bank since 1954 and continue that legacy with a fifth generation of family members on staff. The bank’s growth has been in business loans, personal Loans, Deposits and Locations with services in Grinnell, Johnston, Marengo, and Polk City.

Timeline

2025
2025
2025

Fitzpatrick A. “Rusty” Jones is named Bank President

2025 – GSB celebrates 100 years
2025

Grinnell State Bank celebrates 100 years!

2018
2018
2018

F. Austin Jones is named Bank President

2017
2017

Grinnell State Bank purchases Augustine-Johnston Insurance Agency in Marengo

2016
2016
2016

Consolidated our Johnston & Urbandale branches into our Johnston Branch

2015
2015

Grinnell State Bank acquires Hamilton Insurance Agency in Grinnell

2013
Grinnell State Bank Marengo Iowa branch exterior photo
2013

Grinnell State Bank Remodels Marengo Branch

2011
2011

Grinnell State Bank acquires three locations in Johnston, Polk City & Urbandale – formerly Polk County Bank

2001
2001

Grinnell State Bank purchases the book of business from Rohrer Insurance in Marengo

1999
1999
1999

David Jones is named Bank President

1996
1996
1996

Grinnell State Bank Remodels Grinnell Branch

1996
1996

Grinnell State Bank acquires a location in Marengo – formerly Boatmen’s Bank

1990s
1990

Grinnell State Banks consolidates the Grinnell and Malcom branches into the Grinnell Branch

1972 – Bank President
1972 – Bank President
1972

F. Addison Jones is named Bank President

1972
1972
1972

Grinnell State Bank expands the Grinnell Branch with a new, two-lane drive-up facility

1954
Fred Jones board member photo, Grinnell State Bank leadership
1954

Fred A. Jones purchases Grinnell State Bank from C.A. Frasier

1940s
1940

Grinnell State Bank opens a location in Malcom

1925
1925
1925

Grinnell Businessmen Re-organize Grinnell Savings Bank into Grinnell State Bank as an independent community bank

BENEFITS OF YOUR ACCOUNT

Bringing the Bank to you

We want to make banking easy for you with 24/7 access to your accounts and convenient access to services. Have 24/7 access to all of the following without having to step foot in the bank:

Your Current Accounts

Mobile App with Mobile Deposit, Bill Pay, Internal Account Transfers & more

Fee-Free Shazam Privileged Status ATMs

Telebanking

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