Routing Number 071910187

Routing number 071910187 is assigned to Old Second Natl Bk Aurora, a main office located at 37 South River Street, Aurora, Illinois 60507. This nine-digit ABA routing transit number identifies Old Second Natl Bk Aurora within the Federal Reserve's Chicago district for processing ACH payments, direct deposits, wire transfers, and check clearing.

The first two digits (07) indicate the Federal Reserve Bank of Chicago, digits 3-4 (19) identify the processing center, digits 5-8 (1018) are the institution identifier, and the final digit (7) is a checksum that validates the entire number using the ABA's modulus-10 algorithm.

To set up direct deposit with Old Second Natl Bk Aurora, provide your employer with routing number 071910187 along with your account number. Your account number is separate from the routing number and can be found on the bottom of your checks (to the right of the routing number), in Old Second Natl Bk Aurora's mobile app, or in online banking under account details.

You can verify this routing number on the bottom-left corner of any check from Old Second Natl Bk Aurora, in the mobile app, or by calling 630-892-0202. Direct deposits using this routing number are processed through the Automated Clearing House (ACH) network and typically post within 1-2 business days.

Routing number 071910187 is registered for ACH transactions at Old Second Natl Bk Aurora, including direct deposits, bill payments, payroll, and recurring transfers. ACH payments are processed in batches through the Federal Reserve and typically settle in 1-2 business days.

For domestic wire transfers, Old Second Natl Bk Aurora may use a different routing number. Wire transfers are processed individually through the Fedwire system and settle same-day. Always confirm the correct wire routing number with Old Second Natl Bk Aurora before initiating a wire — using an ACH routing number for a wire can cause the transfer to be rejected or delayed.

This main office of Old Second Natl Bk Aurora is located at 37 South River Street, Aurora, IL 60507. Old Second Natl Bk Aurora operates in the Federal Reserve's Chicago district, which serves as the regional hub for monetary policy and payment processing in this area.