Marathon Bank Routing Number

What is an ABA routing number?

An ABA routing number, also called a routing transit number (RTN), is a 9-digit code that identifies a U.S. financial institution in the payment system. It tells ACH transfers, Fedwire payments, and paper checks which bank to route money to. The format was created by the American Bankers Association in 1910 and is still the backbone of U.S. domestic payments.

What is the difference between a routing number and an account number?

Your routing number identifies the bank; your account number identifies your specific account at that bank. On a paper check, the routing number is the 9-digit number in the bottom-left, and the account number is to its right.

What is the Marathon Bank routing number?

The Marathon Bank routing number is 275970020. It is the primary ABA routing transit number registered to Marathon Bank, headquartered in Wausau, WI. A bank can hold more than one routing number, so this is the one on record for the institution, not necessarily the one printed on every check. The number comes from the FFIEC National Information Center institution record, last refreshed here on October 8, 2026.

What is the Marathon Bank wire routing number?

This page lists 275970020, the primary routing number registered to Marathon Bank. The record does not say whether the bank uses the same number for wire transfers, and many banks use a separate routing number for domestic wires. Confirm the wire routing number with Marathon Bank before sending a wire.

Is ABA number 275970020 the routing number for Marathon Bank?

Yes. ABA number 275970020 is the primary routing number registered to Marathon Bank. Check it against the routing number on a check or in your online banking before sending an ACH payment, because a bank can use different numbers by region or product.

Which bank uses routing number 275970020?

Routing number 275970020 belongs to Marathon Bank, headquartered in Wausau, WI. It is the bank's primary ABA routing number (FDIC certificate 29745).

Routing numbers in Wausau, WI

Credit union

Connexus Credit Union: 275982296

Bank

Incrediblebank: 075911742

Bank

Peoples State Bank: 075911616

Credit union

Cloverbelt Credit Union: 275982283

Credit union

Marathon County Employees Credit Union: 275982322

Credit union

M.E. Employees Credit Union: 275982335

Credit union

Public Service Credit Union: 275982351

All routing numbers in Wisconsin