Bank routing number ยท Ottawa, Illinois
Osb Community Bank Routing Number (ABA): 271972925
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The Osb Community Bank routing number is 271972925. It is the primary ABA routing transit number on the bank's FFIEC National Information Center record, refreshed here on October 25, 2026.
Osb Community Bank at a glance
Its CET1 capital ratio was 15.79% at Q2 2026, comfortably above the 7% level required once the capital conservation buffer is included.
- Total assets, Q2 2026
- $355.6M
- CET1 ratio, Q2 2026
- 15.79%
- Deposit insurance
- FDIC
- Regulator
- FDIC
- Domestic offices
- 3 FDIC institution directory, current count
- Latest call report
- Q2 2026, FFIEC 051
- Established
- 1871
Full financial profile · Is Osb Community Bank safe? · Osb Community Bank call report · Branch locations
Osb Community Bank routing numbers on file
| Routing number | Type | Status | Source |
|---|---|---|---|
| 271972925 | Primary ABA | Active | FFIEC NIC |
Record refreshed here on October 25, 2026. NIC holds one primary number per bank; Osb Community Bank publishes any other numbers it uses itself.
What the digits mean
The first two digits, 27, place this number in the Federal Reserve Bank of Chicago's district (District 7): prefixes 21 to 32 are the district numbers assigned to thrift institutions. Digits five through eight, 7292, identify the institution within that district. The last digit, 5, is a check digit, and the number passes the standard check: weight the nine digits 3, 7, 1, 3, 7, 1, 3, 7, 1 and the sum is a multiple of 10.
Before you send money to Osb Community Bank
A routing number tells the payment network which financial institution holds an account. You give it with an account number for ACH transfers through the automated clearing house, such as direct deposit, bill pay and transfers from a checking account, which usually settle in one to two business days. An international wire to a US account normally needs the bank's SWIFT code as well.
Match this number against the one on your Osb Community Bank checks or in its online banking. Ask the bank for wire instructions (www.myosb.bank). Our record does not show whether this number receives wires. The Federal Reserve's E-Payments Routing Directory shows it: its Fedwire participant search lists the numbers that can receive Fedwire transfers, and its FedACH search lists those that receive ACH payments. How to confirm any routing number.
About Osb Community Bank
Osb Community Bank is headquartered in Ottawa, Illinois and was established in 1871. It is in the OTTAWA, IL metro area. It reported $355.6M in total assets and $293.5M in deposits for Q2 2026, the 133rd largest of the 319 banks headquartered in Illinois. See the largest banks in Illinois by total assets. It reports 3 domestic offices. Its deposits have been FDIC insured since 1989. Its primary federal regulator is the FDIC. 4 other banks and credit unions headquartered in Ottawa have a routing number listed here.
What the digits in 271972925 mean
The first four digits, 2719, are the Federal Reserve routing symbol. The prefix 27 places the number in the 7th Federal Reserve District (Chicago), a range the ABA plan set aside for thrift institutions. That is also the district where the bank is headquartered. Digits five through eight, 7292, identify the institution within its Federal Reserve district. The last digit, 5, is a check digit. Weighting the digits 3, 7 and 1 in turn gives 3 x 20 + 7 x 16 + 8 = 180, a multiple of 10, so 271972925 is a well-formed routing number. A mistyped digit almost always breaks that sum.
What is the Osb Community Bank routing number?
The Osb Community Bank routing number is 271972925. It is the primary ABA routing transit number registered to Osb Community Bank, headquartered in Ottawa, IL. The number comes from the FFIEC National Information Center institution record, last refreshed here on October 25, 2026.
What is the Osb Community Bank wire routing number?
This page lists the primary routing number registered to Osb Community Bank. The record does not say whether the bank uses the same number for wire transfers. Confirm the wire routing number with Osb Community Bank before sending a wire.
Is ABA number 271972925 the routing number for Osb Community Bank?
Yes. It is the primary routing number registered to Osb Community Bank.
Which bank uses routing number 271972925?
It belongs to Osb Community Bank, headquartered in Ottawa, IL. It is the bank's primary ABA routing number (FDIC certificate 27989).
Routing numbers in Ottawa, IL
- Bank
- American Commercial Bank & Trust, N.A.: 071902399
- Credit union
- Financial Plus Credit Union: 271987363
- Bank
- First Federal Savings Bank: 271972912
- Credit union
- Ottawa Hiway Credit Union: 271987392
View Osb Community Bank's full profile →
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Regulator records: FDIC BankFind (cert 27989) · FFIEC NIC profile (RSSD 725077)