Routing Number and Information
Old Second Bank Aurora branch in Aurora, IL
| Bank Name | Old Second Bank Aurora |
| Bank Routing Number | 71900760 |
| Bank City | Aurora |
| Bank State | IL |
Old Second Bank Aurora branch in Elburn, IL
| Bank Name | Old Second Bank Aurora |
| Bank Routing Number | 71910187 |
| Bank City | Elburn |
| Bank State | IL |
Old Second Bank Aurora branch in Aurora, IL
| Bank Name | Old Second Bank Aurora |
| Bank Routing Number | 71916822 |
| Bank City | Aurora |
| Bank State | IL |
Old Second Bank Aurora branch in Chicago Heights, IL
| Bank Name | Old Second Bank Aurora |
| Bank Routing Number | 71922887 |
| Bank City | Chicago Heights |
| Bank State | IL |
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