The routing number for Old Second Natl Bank is 71926867.

Old Second Natl Bank is located at this address: 37 S River Street, Aurora, Illinois.

In case of mail delivery, this is the full address you should use:

Old Second Natl Bank
37 S River Street
Aurora
Illinois
60506-0000

To contact Old Second Natl Bank by phone, call: (630) 844-8631

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This page has the contact information and routing numbers for Old Second Natl Bank.

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We are working hard to keep the site updated, however, we cannot guarantee that the information on the site is fully updated at any point in time as changes may occur at any time we encourage you to validate the information with your bank.

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Routing Numbers General Information

Routing number is a 9 digit number given to a bank by the ABA (American Bankers Association) in order to recognize the bank for which payment is being sent to.

Routing numbers are often called ABA numbers, Check routing numbers, or Routing transit numbers (RTN).

Routing numbers change from bank to bank and from one bank location to another, there are also different routing numbers for different transactions.

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