Old Second National Bank
- Bank Name:Old Second National Bank
- Bank Class:National Bank - FED Member
- Member FDIC:Certificate #3603
- Routing Number:ACH & Wire - 071900760
- Locations:48 Branches in Illinois
- Web Address:oldsecond.com
Old Second National Bank Information
Old Second National Bank was founded in November 1887 and is based in Aurora, Illinois. The bank operates as a subsidiary of Old Second Bancorp, Inc.. According to the Federal Deposit Insurance Corporation records and based on the institution's charter type, Old Second National Bank is classified as a commercial bank, national (federal) charter and Fed member, supervised by the Office of the Comptroller of the Currency (OCC). Old Second National Bank is a FDIC-insured bank with certificate number of 3603. The assigned Fed RSSD ID of Old Second National Bank is 936136.
Old Second National Bank currently operates with 48 branches located in Illinois. Old Second National Bank is the 16th largest bank in Illinois. The bank does not have any offices outside Illinois. As of today, Old Second National Bank is the 162nd largest bank in US by branch count.
A routing number is a nine-digit code used to identify a financial institution. The bank has one routing number in our database and the routing number for Old Second National Bank is 071900760. This routing number is necessary to process ACH transfers, wire transactions, direct deposits, bill payments, and other monetary transfers within the US.
The full address of bank headquarters is 37 S. River Street, Aurora, IL 60506. You can visit the official website of the bank at https://www.oldsecond.com for more information and online banking service if available. For a comprehensive list of Old Second National Bank branches, including detailed information such as hours of operation, contact numbers, addresses, available services, and more, please narrow your search by selecting a location from the map or list below.
Map Of Branch Locations
Bank Offices In Illinois
History Of Old Second National Bank
Old Second National Bank, established on November 21, 1887, originally operated under the name The Old Second National Bank of Aurora. The bank has undergone several acquisitions and name changes throughout its history. Notably, in 1997, it acquired First State Bank of Maple Park; in 1999, it purchased both The Old Second Community Bank of North Aurora and The Old Second Community Bank of Aurora. The bank continued to expand in the 2000s, acquiring Bank of Sugar Grove in February 2000 and relocating its main office to 37-39 South River Street, Aurora, Illinois, in June of the same year. In July 2007, the institution changed its name to Old Second National Bank and completed multiple acquisitions, including Old Second Bank-Kane County and Old Second Bank-Yorkville. Other acquisitions followed, notably Heritage Bank in February 2008 and Abc Bank in April 2018. Most recently, on August 29, 2021, Old Second National Bank acquired West Suburban Bank in Lombard, Illinois.
Below is a list of some important events in bank's history, including mergers and acquisitions.
08-29-2021Acquired West Suburban Bank in Lombard, IL.
04-20-2018Acquired Abc Bank (11694) in Chicago, IL.
02-09-2008Acquired Heritage Bank in Frankfort, IL.
07-01-2007Changed Institution Name to Old Second National Bank.
07-01-2007Acquired Old Second Bank-Kane County in Elburn, IL.
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