| Old Second National Bank Aurora - Orchard Road Branch | Aurora1-877-866-0202 | 1-877-866-0202 |
| Old Second National Bank Aurora - Farnsworth Branch | Aurora1-877-866-0202 | 1-877-866-0202 |
| Old Second National Bank Aurora - Redwood Drive Branch | Aurora1-877-866-0202 | 1-877-866-0202 |
| Old Second National Bank Aurora - Fox Valley Branch | Aurora1-877-866-0202 | 1-877-866-0202 |
| Old Second National Bank Aurora - Main Bank Branch | Aurora1-877-866-0202 | 1-877-866-0202 |
| Old Second National Bank Batavia (East) Branch | Batavia1-877-866-0202 | 1-877-866-0202 |
| Old Second National Bank Batavia (West) Branch | Batavia1-877-866-0202 | 1-877-866-0202 |
| Old Second National Bank Burlington Branch | Burlington1-877-866-0202 | 1-877-866-0202 |
| Old Second National Bank Chicago Heights Branch | Chicago Heights1-877-866-0202 | 1-877-866-0202 |
| Old Second National Bank Elburn P.O. Box 8018 Elburn IL 60119 (mailing) Branch | Elburn1-877-866-0202 | 1-877-866-0202 |
| Old Second National Bank Elgin McLean Branch | Elgin1-877-866-0202 | 1-877-866-0202 |
| Old Second National Bank Elgin Rt. 20 Branch | Elgin1-877-866-0202 | 1-877-866-0202 |
| Old Second National Bank Frankfort Branch | Frankfort1-877-866-0202 | 1-877-866-0202 |
| Old Second National Bank Joliet Branch | Joliet1-877-866-0202 | 1-877-866-0202 |
| Old Second National Bank Kaneville Branch | Kaneville1-877-866-0202 | 1-877-866-0202 |
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| Old Second National Bank Lisle Branch | Lisle1-877-866-0202 | 1-877-866-0202 |
| Old Second National Bank Maple Park Branch | Maple Park1-877-866-0202 | 1-877-866-0202 |
| Old Second National Bank New Lenox Branch | New Lenox1-877-866-0202 | 1-877-866-0202 |
| Old Second National Bank North Aurora Branch | North Aurora1-877-866-0202 | 1-877-866-0202 |
| Old Second National Bank Oswego Branch | Oswego1-877-866-0202 | 1-877-866-0202 |
| Old Second National Bank Ottawa Branch | Ottawa1-877-866-0202 | 1-877-866-0202 |
| Old Second National Bank Plano Branch | Plano1-877-866-0202 | 1-877-866-0202 |
| Old Second National Bank St. Charles Branch | Saint Charles1-877-866-0202 | 1-877-866-0202 |
| Old Second National Bank Sugar Grove Branch | Sugar Grove1-877-866-0202 | 1-877-866-0202 |
| Old Second National Bank Sycamore Branch | Sycamore1-877-866-0202 | 1-877-866-0202 |
| Old Second National Bank Wasco Branch | Wasco1-877-866-0202 | 1-877-866-0202 |
| Old Second National Bank Yorkville - Countryside Branch | Yorkville1-877-866-0202 | 1-877-866-0202 |
| Old Second National Bank Yorkville - Bridge Street Branch | Yorkville1-877-866-0202 | 1-877-866-0202 |
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