Bank Routing Number

Commercial Bank of California Routing Number

The primary ABA routing number (RTN) for Commercial Bank of California, Irvine, CA is shown below.

Primary ABA / RTN

122243596

Verify before you send money. This is the bank's primary registered routing number, taken from the FFIEC National Information Center institution record (last refreshed here on October 8, 2026). Banks often use a different routing number for wire transfers than for ACH, and large banks vary it by region; always confirm the correct number on a check or with your bank before initiating a transfer.

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 Commercial Bank of California routing number?

The Commercial Bank of California routing number is 122243596. It is the primary ABA routing transit number registered to Commercial Bank of California, headquartered in Irvine, CA. 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 Commercial Bank of California wire routing number?

This page lists 122243596, the primary routing number registered to Commercial Bank of California. 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 Commercial Bank of California before sending a wire.

Is ABA number 122243596 the routing number for Commercial Bank of California?

Yes. ABA number 122243596 is the primary routing number registered to Commercial Bank of California. 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 122243596?

Routing number 122243596 belongs to Commercial Bank of California, headquartered in Irvine, CA. It is the bank's primary ABA routing number (FDIC certificate 57417).

Routing numbers in Irvine, CA

Bank: Commercewest Bank: 122243334
Bank: Liberty Bank N.A.: 122243130
Bank: Bank Irvine: 122245387
Bank: Beach Cities Commercial Bank: 122245374
Bank: California Business Bank: 122044119

All routing numbers in California

View Commercial Bank of California's full profile →

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Regulator records: FDIC BankFind (cert 57417) · FFIEC NIC profile (RSSD 3189063)