Old Second National Bank

4.8
116 reviews

About

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Unlike other Chicago-area banks, our heritage traces the advancement and evolution of the banking industry and the growth and expansion of the Chicago metropolitan area. As Old Second expands throughout Chicagoland and the surrounding communities, our commitment to a better banking experience remains steadily on course. Backed by an unwavering sense of financial responsibility and focus on humanity, we've persevered through the most challenging and rewarding economic climates and historical events since the late nineteenth century. For more than 150 years, Old Second has consistently put businesses and individuals throughout the Chicago area first, and we're only getting started. Member FDIC. Equal Housing Lender.

Location

Old Second National Bank
8001 S Cass Ave, Darien, IL
60561, United States

Hours

Reviews

4.8
116 reviews
5 stars
107
4 stars
4
3 stars
0
2 stars
2
1 star
3
  • DG
    Diana Goergen
    Nov 13, 2025
    4.0
    Stopped in the Darien branch at 8301 South Cass Ave. to set up a transfer account from Evergreen Bank to Old Second. The tellers were not helpful and even recommended me to travel to a sister branch in Hinsdale that was a previous Evergreen bank. Wouldn’t the Darien branch have access to my account since both banks are now Old Second? They verified the purchase of Evergreen Bank and access to view my account. Further tellers explained bankers were with clients and the wait time was unknown as clients had appointments. Kent Keller AVP Manager stepped out of his office and offered help. No way could I have just downloaded the Old Second App and seen my new account with this new bank. Kent had to give me a temporary user and password access to set up the account. Within 15 minutes I was all set. He demonstrated excellent customer service. This would be a 1 star review ,but Kent’s intervention resulted in a very positive result and service. Thank you Kent.
  • OK
    Oleksandr K
    Jun 9, 2025
    1.0
    The ladies running the place seem to be the layziest and slowest moving I've ever seen. They seemed so chilled and relaxed and took their sweet time while people were waiting impatiently. Me and a bunch of other clients sat there visibly upset. One older gentleman asked what takes so long and the tall dark lady told him to go to the other location down the street hoping for faster service. I'm not returning to this location again.
  • RU
    Ron Ulman
    Jan 31, 2024
    5.0
    All went very well did a wonderful job explaining everything clean and fast loved it. Tamika was my advisor, job well done.
  • TA
    Tom Arias
    Feb 23, 2023
    5.0
    Every one at Cass deserves 100 points from me For the excellent work they do. Beverly, Rajini and all tellers are great
  • DP
    DAVID PAKULA
    Feb 17, 2023
    5.0
    Beverly was very polite, courteous and helpful in taking care of all of my added banking needs.

Frequently Asked Questions About Old Second National Bank

What are the regular business hours of Old Second National Bank?

Old Second National Bank is open Monday through Friday from 9:00 AM to 5:30 PM and on Saturday from 9:00 AM to 1:00 PM. The bank is closed on Sundays.

Does Old Second National Bank offer drive-through service and what are the hours?

Yes, Old Second National Bank offers drive-through service Monday to Friday from 9:00 AM to 5:30 PM, and on Saturday from 9:00 AM to 1:00 PM. It is closed on Sundays.