Oak Bank Routing Number (ABA): 075917924

Oak Bank at a glance

Its CET1 capital ratio was 15.32% at Q2 2026, comfortably above the 7% level required once the capital conservation buffer is included.

Total assets, Q2 2026

$486.3M

CET1 ratio, Q2 2026

15.32%

Deposit insurance

FDIC

Regulator

FDIC

Domestic offices

1 FDIC institution directory, current count

Latest call report

Q2 2026, FFIEC 051

Established

2000

Full financial profile · Is Oak Bank safe? · Oak Bank call report · Branch locations

What the digits mean

The first two digits, 07, place this number in the Federal Reserve Bank of Chicago's district (District 7). Digits five through eight, 1792, identify the institution within that district. The last digit, 4, 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 Oak 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 Oak Bank checks or in its online banking. Ask the bank for wire instructions (http://www.oak.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 Oak Bank

Oak Bank is headquartered in Fitchburg, Wisconsin and was established in 2000. It is in the MADISON, WI metro area. It reported $486.3M in total assets and $419.6M in deposits for Q2 2026, the 70th largest of the 153 banks headquartered in Wisconsin. It reports 1 domestic office. Its deposits have been FDIC insured since 2000. Its primary federal regulator is the FDIC.

What the digits in 075917924 mean

The first four digits, 0759, are the Federal Reserve routing symbol. The prefix 07 places the number in the 7th Federal Reserve District (Chicago). That is also the district where the bank is headquartered. Digits five through eight, 1792, identify the institution within its Federal Reserve district. The last digit, 4, is a check digit. Weighting the digits 3, 7 and 1 in turn gives 3 x 18 + 7 x 10 + 16 = 140, a multiple of 10, so 075917924 is a well-formed routing number. A mistyped digit almost always breaks that sum.

What is the Oak Bank routing number?

The Oak Bank routing number is 075917924. It is the primary ABA routing transit number registered to Oak Bank, headquartered in Fitchburg, WI. The number comes from the FFIEC National Information Center institution record, last refreshed here on October 25, 2026.

What is the Oak Bank wire routing number?

This page lists the primary routing number registered to Oak Bank. The record does not say whether the bank uses the same number for wire transfers. Confirm the wire routing number with Oak Bank before sending a wire.

Is ABA number 075917924 the routing number for Oak Bank?

Yes. It is the primary routing number registered to Oak Bank.

Which bank uses routing number 075917924?

It belongs to Oak Bank, headquartered in Fitchburg, WI. It is the bank's primary ABA routing number (FDIC certificate 35333).

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