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Respected and Recommended
Since 1871

Discover Your Banking Advantage

ATTENTIONDebit Card Customers

If you experience difficulties when using your Ottawa Savings Bank Debit Card,

RUN the transaction using your PIN number so that

it is processed as a pin-based transaction.  

If you have difficulties or have questions, contact one of our branches

Ottawa 815-433-2525   Marseilles 815-795-2129     Morris 815-941-0004


Click on the following links to read more:

Financial scams and how to avoid them

Understanding Beneficial Ownership
Customizable Debit Card Monitoring and Controls
 Surcharge free ATM network


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We are your neighborhood bank.
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OSB is very active in the local community.
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Looking for a mortgage? OSB has you covered.

At Ottawa Savings Bank we promise to provide you with service second to none. We have a rich history and a fresh approach to security so you can bank with confidence. We are your friends, your partner, your service provider –

We are your neighborhood bank.

Featured Services

Ottawa Savings Bank

Mobile Banking

Mobile Banking

With Mobile Banking you can check account balances, transfer money, and pay your bills right from the palm of your hand!

Mortgage Application

Mortgage Application

Ottawa Savings Bank makes it easy to apply for your mortgage online so you can quickly get the money you need!

ATM Network

ATM Network

Get the cash you need and never pay a surcharge fee!!

It’s easy with your Ottawa Savings Bank card and 25,000+ Money Pass ATMs from coast-to-coast.



Sign up for Online Banking and get easy, free, secure paperless statements delivered directly to your email inbox.

Ottawa Savings Bank

Welcome to OSB

If you’re car shopping, Ottawa Savings Bank and Twin Oaks Savings Bank, a Division of Ottawa Savings Bank, have great rates and financing up to 72 months!

Contact any of our offices for more information.