Routing Number | Bank Name | Bank Address | Phone Number | Change Date |
| |
| | | |
| 271976523 | ILLIANA FINANCIAL CREDIT UNION | 1600 HUNTINGTON DR, CALUMET CITY, IL 60409-0000 | (708) 891-7812 | 2002-03-20 |
| 071109163 | ILLINI BANK | 3200 W. ILES AVE, SPRINGFIELD, IL 62707-0000 | (217) 547-9696 | 2003-02-26 |
| 071918383 | ILLINI STATE BANK | 230 LASALLE ST., TONICA, IL 61370-0000 | (815) 442-8211 | 2008-01-28 |
| 284084512 | ILLINOIS CENTRAL EMPLOYEES CU | SUITE 7, MEMPHIS, TN 38132-2129 | (901) 332-2686 | 1997-04-14 |
| 271989714 | ILLINOIS COMMUNITY CREDIT UNION | 508 W STATE STREET, SYCAMORE, IL 60178-1328 | (815) 895-4541 | 1996-12-12 |
| 071107233 | ILLINOIS NATIONAL BANK | 322 E CAPITOL, SPRINGFIELD, IL 62701-0000 | (217) 747-5537 | 2009-02-25 |
| 071109338 | ILLINOIS NATIONAL BANK | 307 E JACKSON, SPRINGFIELD, IL 62701-0000 | (217) 747-5537 | 2009-02-13 |
| 071108355 | ILLINOIS NATIONAL BANK | 322 E. CAPITOL, SPRINGFIELD, IL 62701-0000 | (217) 747-5537 | 2009-02-13 |
| 271070924 | ILLINOIS SERVICE | 4619 S KING DRIVE, CHICAGO, IL 60653-0000 | (773) 624-2000 | 2004-02-09 |
| 271189336 | ILLINOIS STATE POLICE FCU | 730 ENGINEERING AVE, SPRINGFIELD, IL 62703-0000 | (217) 523-8000 | 2008-02-27 |