FDIC-insured bank
OSB Community Bank — Ottawa, IL
Bank headquartered in Ottawa, Illinois, part of OTTAWA BCORP INC.
Source: FDIC BankFind Suite, data as of June 30, 2026, fetched September 5, 2026
Headquarters and contact
| Address | 925 La Salle St Ottawa, IL 61350 |
| County | Lasalle |
| Metro area | Ottawa, IL |
| Website | www.myosb.bank |
| Phone | not published in FDIC data, see the bank's website |
FDIC record
| FDIC Certificate | 27989 |
| Federal Reserve RSSD ID | 725077 |
| Status | Active |
| Charter class | NM (STATE) |
| Holding company | OTTAWA BCORP INC |
| Domestic offices | 3 |
| Financials as of | June 30, 2026 |
How to find your OSB Community 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.myosb.bank.
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Offices nearest to headquarters
| Osb Community Bank main office Ottawa, IL |
925 La Salle St, 61350 |
| Osb Community Bank Branch Marseilles, IL |
125 W Bluff St, 61341 |
| Osb Community Bank Branch Morris, IL |
1508 Creek Dr, 60450 |
Where OSB Community Bank has offices
Cities with the most OSB Community Bank offices
Other banks headquartered in Ottawa
| American Commercial Bank & Trust, National Association | $2.07 billion |
| First Federal Savings Bank | $421.91 million |
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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