Download our mobile app or access your online banking account »


Hours of operations at our Ottawa, Marseilles and Morris locations:

Lobby: Monday – Friday…8:00am – 5:00 pm
Saturday……………8:00 am – 12:00 pm

Drive-Up: Monday – Thursday…8:00am – 5:00pm
Friday……………………8:00am – 6:00pm
Saturday………………..8:00am – 12:00pm

Email: [email protected]

Please Note: Ottawa Savings Bank is committed to protecting your privacy and ensuring your private information is secure. For your protection, please do not send sensitive information such as account numbers, Social Security Numbers or private information through email.

For details or additional information on our products and services, please contact any member of our friendly staff.

To report a lost or stolen OSB Debit Card please call 1-866-842-5208.

Marseilles Exterior B
Morris Exterior A
Ottawa Savings Bank clock tower
Ottawa Savings Bank
925 LaSalle Street
Ottawa, IL 61350
Phone: 815-433-2525
Toll Free: 800-491-9400
Fax: 815-433-2573
Twin Oaks Savings Bank – Marseilles
A Division of Ottawa Savings Bank
125 West Bluff Street
Marseilles, IL 61341
Phone: 815-795-2129
Fax: 815-795-6381
Twin Oaks Savings Bank – Morris
A Division of Ottawa Savings Bank
1508 Creek Drive
P.O. Box 465
Morris, IL 60450
Phone: 815-941-0004
Fax: 815-941-0194
Ottawa Savings Bank – Shorewood
Loan Origination Office (By appointment only)
566 BrookForest Ave
Shorewood, IL 60404 
Phone: 815-630-2120
Ottawa Savings Bank – LaSalle
Loan Origination Office (Stop in and see us or make an appointment)
119 Joliet St
LaSalle, IL 61301
Phone: 815-250-0684


Ottawa Savings Bank – Sandwich
Loan Origination Office 
100 South Latham Street, Suite 103
Sandwich, IL 60548
Phone: 815-570-2440