Western Alliance 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 Western Alliance Bank routing number?

The Western Alliance Bank routing number is 122105980. It is the primary ABA routing transit number registered to Western Alliance Bank, headquartered in Phoenix, AZ. 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 Western Alliance Bank wire routing number?

This page lists 122105980, the primary routing number registered to Western Alliance 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 Western Alliance Bank before sending a wire.

Is ABA number 122105980 the routing number for Western Alliance Bank?

Yes. ABA number 122105980 is the primary routing number registered to Western Alliance 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 122105980?

Routing number 122105980 belongs to Western Alliance Bank, headquartered in Phoenix, AZ. It is the bank's primary ABA routing number (FDIC certificate 57512).

Routing numbers in Phoenix, AZ

Bank

USAA Federal Savings Bank: 314074269

Credit union

Oneaz Credit Union: 322172496

Credit union

Arizona Central Credit Union: 322172441

Credit union

Copper State Credit Union: 322172849

Bank

Goldwater Bank, N.A.: 122106277

Bank

Integro Bank: 122106484

Credit union

Banner Federal Credit Union: 322172881

Bank

Western Alliance Trust Company, N.A.: 122106497

All routing numbers in Arizona