O'Fallon, IL
Bank Bank of O'Fallon
Bank of O'Fallon is a federally insured bank based in O'Fallon, Illinois.
- Type
- Bank
- Charter
- State-chartered commercial bank, not a Federal Reserve member
- Primary regulator
- FDIC
- Established
- March 28, 1960
- Headquarters
- O'Fallon, IL
- FDIC certificate #
- 18171
- Fed RSSD ID
- 410748
- Holding company
- Security First Bancshares Inc
- Website
- www.bankofallon.com
$377.3M
Total assets Data as of Q1 2026
$325.1M
Total deposits Data as of Q1 2026
2
Branch locations Data as of Q1 2026
$1.7M
Net income Data as of Q1 2026
1.82%
Return on assets Data as of Q1 2026
Source: U.S. FDIC BankFind & NCUA 5300 Call Report (public data). Data sources · Data as of Q1 2026
Branches by state
Bank of O'Fallon operates 2 branch locations in Illinois. Select a state to drill down to its towns and individual branches.
Ownership
Bank of O'Fallon is owned by Security First Bancshares Inc. See the full ownership & merger history.
Bank of O'Fallon 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 Bank of O'Fallon’s $377.3M in assets.
- First National Bank of Griffin $377.5M
- First Federal Savings and Loan Association $377.6M
- Pony Express Bank $376.9M
- American Community Bank of Indiana $376.5M
- City Bank & Trust Co. $378.1M
- Wolf River Community Bank $378.1M