Ottawa, IL
Bank OSB Community Bank
OSB Community Bank is a federally insured bank based in Ottawa, Illinois.
- Type
- Bank
- Charter
- State-chartered commercial bank, not a Federal Reserve member
- Primary regulator
- FDIC
- Established
- January 1, 1871
- Headquarters
- Ottawa, IL
- FDIC certificate #
- 27989
- Fed RSSD ID
- 725077
- Holding company
- Ottawa Bcorp Inc
- Website
- www.myosb.bank
$360.8M
Total assets Data as of Q1 2026
$298.4M
Total deposits Data as of Q1 2026
3
Branch locations Data as of Q1 2026
$663K
Net income Data as of Q1 2026
0.73%
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
OSB Community Bank operates 3 branch locations in Illinois. Select a state to drill down to its towns and individual branches.
Ownership
OSB Community Bank is owned by Ottawa Bcorp Inc. See the full ownership & merger history.
OSB Community 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
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