Bank routing number ยท Buffalo, Oklahoma
Oklahoma State Bank Routing Number (ABA): 103112439
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The Oklahoma State Bank routing number is 103112439. It is the primary ABA routing transit number on the bank's FFIEC National Information Center record, refreshed here on October 27, 2026.
Oklahoma State Bank at a glance
Its CET1 capital ratio was 14.51% at Q2 2026, comfortably above the 7% level required once the capital conservation buffer is included.
- Total assets, Q2 2026
- $66.7M
- CET1 ratio, Q2 2026
- 14.51%
- Deposit insurance
- FDIC
- Regulator
- FDIC
- Domestic offices
- 2 FDIC institution directory, current count
- Latest call report
- Q2 2026, FFIEC 051
- Established
- 1930
Full financial profile · Is Oklahoma State Bank safe? · Oklahoma State Bank call report · Branch locations
Oklahoma State Bank routing numbers on file
| Routing number | Type | Status | Source |
|---|---|---|---|
| 103112439 | Primary ABA | Active | FFIEC NIC |
Record refreshed here on October 27, 2026. NIC holds one primary number per bank; Oklahoma State Bank publishes any other numbers it uses itself.
What the digits mean
The first two digits, 10, place this number in the Federal Reserve Bank of Kansas City's district (District 10). Digits five through eight, 1243, identify the institution within that district. The last digit, 9, 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 Oklahoma State 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 Oklahoma State Bank checks or in its online banking. Ask the bank for wire instructions (www.osbbuffalo.com). 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 Oklahoma State Bank
Oklahoma State Bank is headquartered in Buffalo, Oklahoma and was established in 1930. It reported $66.7M in total assets and $59.5M in deposits for Q2 2026, the 146th largest of the 169 banks headquartered in Oklahoma. See the largest banks in Oklahoma by total assets. It reports 2 domestic offices. Its deposits have been FDIC insured since 1934. Its primary federal regulator is the FDIC.
What the digits in 103112439 mean
The first four digits, 1031, are the Federal Reserve routing symbol. The prefix 10 places the number in the 10th Federal Reserve District (Kansas City). That is also the district where the bank is headquartered. Digits five through eight, 1243, identify the institution within its Federal Reserve district. The last digit, 9, is a check digit. Weighting the digits 3, 7 and 1 in turn gives 3 x 6 + 7 x 4 + 14 = 60, a multiple of 10, so 103112439 is a well-formed routing number. A mistyped digit almost always breaks that sum.
What is the Oklahoma State Bank routing number?
The Oklahoma State Bank routing number is 103112439. It is the primary ABA routing transit number registered to Oklahoma State Bank, headquartered in Buffalo, OK. The number comes from the FFIEC National Information Center institution record, last refreshed here on October 27, 2026.
What is the Oklahoma State Bank wire routing number?
This page lists the primary routing number registered to Oklahoma State Bank. The record does not say whether the bank uses the same number for wire transfers. Confirm the wire routing number with Oklahoma State Bank before sending a wire.
Is ABA number 103112439 the routing number for Oklahoma State Bank?
Yes. It is the primary routing number registered to Oklahoma State Bank.
Which bank uses routing number 103112439?
It belongs to Oklahoma State Bank, headquartered in Buffalo, OK. It is the bank's primary ABA routing number (FDIC certificate 13416).
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View Oklahoma State Bank's full profile →
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Regulator records: FDIC BankFind (cert 13416) · FFIEC NIC profile (RSSD 324256)