FDIC-insured bank
Southern Illinois Bank — Johnston City, IL
Bank headquartered in Johnston City, Illinois, part of SOUTHERN IL BANCSHARES INC.
Source: FDIC BankFind Suite, data as of June 30, 2026, fetched September 5, 2026
Headquarters and contact
| Address | 1012 W Broadway Blvd Johnston City, IL 62951 |
| County | Williamson |
| Metro area | Carbondale-Marion, IL |
| Website | www.southernillinoisbank.com |
| Phone | not published in FDIC data, see the bank's website |
FDIC record
| FDIC Certificate | 35229 |
| Federal Reserve RSSD ID | 2847085 |
| Status | Active |
| Charter class | NM (STATE) |
| Holding company | SOUTHERN IL BANCSHARES INC |
| Domestic offices | 5 |
| Financials as of | June 30, 2026 |
How to find your Southern Illinois Bank routing number
FDIC does not publish ABA routing numbers, and many banks use different routing numbers by state or by account type. The reliable places to find yours: the bottom left of a check from this bank, the "account details" screen in its online banking, or its official website at www.southernillinoisbank.com.
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Offices nearest to headquarters
| Southern Illinois Bank main office Johnston City, IL |
1012 W Broadway Blvd, 62951 |
| West Frankfort Branch West Frankfort, IL |
404 S Logan St, 62896 |
| Herrin Branch Herrin, IL |
1413 S Park Ave, 62948 |
| Zeigler Branch Zeigler, IL |
202 Christopher Rd, 62999 |
| Thompsonville Branch Thompsonville, IL |
21394 Shawneetown Rd, 62890 |
Where Southern Illinois Bank has offices
Cities with the most Southern Illinois Bank offices
Largest banks headquartered elsewhere in Illinois
| BMO Bank National Association Chicago | $254.97 billion |
| The Northern Trust Company Chicago | $178.57 billion |
| CIBC Bank USA Chicago | $66.50 billion |
| Busey Bank Champaign | $18.15 billion |
| Byline Bank Chicago | $9.91 billion |
| Wintrust Bank, National Association Chicago | $9.57 billion |
| Lake Forest Bank & Trust Company, National Association Lake Forest | $9.25 billion |
| First Mid Bank & Trust, National Association Mattoon | $9.14 billion |
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