Bank Southern Illinois Bank
Southern Illinois Bank is a federally insured bank based in Johnston City, Illinois.
- Type
- Bank
- Charter
- State-chartered commercial bank, not a Federal Reserve member
- Primary regulator
- FDIC
- Established
- September 10, 1999
- Headquarters
- Johnston City, IL
- FDIC certificate #
- 35229
- Fed RSSD ID
- 2847085
- Holding company
- Southern Il Bancshares Inc
- Website
- www.southernillinoisbank.com
Source: U.S. FDIC BankFind & NCUA 5300 Call Report (public data). Data sources · Data as of Q1 2026
Branches by state
Southern Illinois Bank operates 5 branch locations in Illinois. Select a state to drill down to its towns and individual branches.
Ownership
Southern Illinois Bank is owned by Southern Il Bancshares Inc. See the full ownership & merger history.
Southern Illinois Bank financial summary
Other banks in Illinois
Federally insured banks headquartered in Illinois, by total assets.
- BMO Bank National Association $251.96B
- The Northern Trust Company $173.84B
- CIBC Bank USA $65.13B
- Busey Bank $18.01B
- Byline Bank $9.89B
- Wintrust Bank, National Association $9.28B
- Lake Forest Bank & Trust Company, National Association $9B
- First American Bank $8.22B
Similar-size banks
Institutions close to Southern Illinois Bank’s $138.3M in assets.
- First State Bank $138.4M
- The Buckholts State Bank $138.2M
- Bank of Moundville $138.5M
- Preferred Bank $138.1M
- The First Bank of Okarche $138.1M
- Hershey Bank $138.7M