Due to road closures on Friday, September 5, 2025, the Polk City lobby will be closed and the drive up will only be accessible by walk up.

Attention Deposit Account Customers:

Effective September 2, 2025, you will no longer be able to use your GSB debit/ATM card to deposit at non-GSB owned ATMs. You will still be able to deposit at the GSB owned ATMs located at each of our four (4) branches. You can also conveniently deposit checks via Mobile Deposit through our mobile app. If you are not currently set up for Online or Mobile Banking, stop in or contact any of our branches and a personal banker will assist you.

To learn more about how to use Mobile Deposit, visit our Online Banking Education Center.

We understand that this may change how you deposit, however, this decision has been made due to the increasing level of risk associated with check fraud deposits occurring at ATMs.

Instagram
Telebanking (800) 411-9331
Online Login Portal
Open Account Now

Rates

Online Login Portal
Open Account Now

Simply Switch

Simply Switch

Step 1: Open a Grinnell State Bank checking account.

Our friendly, efficient staff will help you decide which account options best fit your needs. Open a checking account online or at any of our four locations by calling our Personal Bankers at:

Grinnell

814 4th Ave
Grinnell, IA 50112
(641)­ 236-­3174

Call (641)­ 236-­3174

JOHNSTON

5601 Merle Hay Rd
Johnston, IA 50131
(515)­ 278-­6300

Call (515)­ 278-­6300

Polk City

205 Broadway St
Polk City, IA 50226
(515) 984-6211

Call (515)­ 984-­6211

Marengo

1101 Court Ave
Marengo, IA 52301
(319)­ 642-­5511

Call (319)­ 642-5511
Step 2: Stop using your previous checking account

Allow time for outstanding checks to clear and automatic debits and credits to switch over. Destroy your ATM and/or debit card(s), any unused checks and deposit slips.

Step 3: Move your Direct Deposit(s) to Grinnell State Bank.

Notify anyone making direct deposits to your previous account of your new Grinnell State Bank account information. For your convenience we have packets that include Direct Deposit Authorization Forms available at each of our locations. To ensure payment has been made to your account, please monitor accounts closely.

For Social Security Direct Deposits, call 1-800-772-1213 or visit https://www.ssa.gov/deposit/

Step 4: Transfer any automatic payments and debits to Grinnell State Bank.

Notify anyone deducting automatic payments (insurance, phone service providers, gym etc.) from your previous account of your new Grinnell State Bank account information.

Step 5: Close your previous checking account.

After all your checks and automatic payments have cleared, close your previous checking account.

Contact our Personal Bankers Today!

Important Information about Procedures for Opening a New Account: To help the government fight the funding of terrorism and money laundering activities, Federal Law requires all financial institutions to obtain, verify, and record information that identifies each person or business that opens an account. What this means for you: When you open an account, we will ask for your name, address, date of birth, and other information that allows us to identify you. We may also ask to see your driver’s license or other identifying documents.

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

For a printable version of Reg E:

 You are accessing a printable version of our Electronic Funds Transfer.

Okay, Proceed to View or Print

For a printable version of our Online Terms and Conditions:

 

You are accessing a printable version of Grinnell State Bank’s Online Banking Terms and Conditions. There are hyperlinks appearing within the document to access additional bank policy information referenced by the link. The links are for reference only, please contact the bank directly to request a copy of the referenced information.

Okay, Proceed to Print