First American Trust, FSB Routing Number (ABA): 122241255

First American Trust, FSB at a glance

Its CET1 capital ratio was 33.45% at Q2 2026, comfortably above the 7% level required once the capital conservation buffer is included.

Total assets, Q2 2026

$9.23B

CET1 ratio, Q2 2026

33.45%

Deposit insurance

FDIC

Regulator

OCC

Domestic offices

10 FDIC institution directory, current count

Established

1985

Full financial profile · Is First American Trust, FSB safe? · Branch locations

What the digits mean

The first two digits, 12, place this number in the Federal Reserve Bank of San Francisco's district (District 12). Digits five through eight, 4125, identify the institution within that district. The last digit, 5, 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 First American Trust, FSB

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 First American Trust, FSB checks or in its online banking. Ask the bank for wire instructions (www.firstamtrust.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 First American Trust, FSB

First American Trust, FSB is headquartered in Santa Ana, California and was established in 1985. It is in the LOS ANGELES-LONG BEACH-ANAHEIM, CA metro area. It reported $9.23B in total assets and $8.70B in deposits for Q2 2026, the 12th largest of the 113 banks headquartered in California. It reports 10 domestic offices. Its deposits have been FDIC insured since 1989. Its primary federal regulator is the OCC. 4 other banks and credit unions headquartered in Santa Ana have a routing number listed here.

What the digits in 122241255 mean

The first four digits, 1222, are the Federal Reserve routing symbol. The prefix 12 places the number in the 12th Federal Reserve District (San Francisco). That is also the district where the bank is headquartered. Digits five through eight, 4125, identify the institution within its Federal Reserve district. The last digit, 5, is a check digit. Weighting the digits 3, 7 and 1 in turn gives 3 x 5 + 7 x 11 + 8 = 100, a multiple of 10, so 122241255 is a well-formed routing number. A mistyped digit almost always breaks that sum.

What is the First American Trust, FSB routing number?

The First American Trust, FSB routing number is 122241255. It is the primary ABA routing transit number registered to First American Trust, FSB, headquartered in Santa Ana, CA. The number comes from the FFIEC National Information Center institution record, last refreshed here on October 25, 2026.

What is the First American Trust, FSB wire routing number?

This page lists the primary routing number registered to First American Trust, FSB. The record does not say whether the bank uses the same number for wire transfers. Confirm the wire routing number with First American Trust, FSB before sending a wire.

Is ABA number 122241255 the routing number for First American Trust, FSB?

Yes. It is the primary routing number registered to First American Trust, FSB.

Which bank uses routing number 122241255?

It belongs to First American Trust, FSB, headquartered in Santa Ana, CA. It is the bank's primary ABA routing number (FDIC certificate 26312).

Routing numbers in Santa Ana, CA

Credit union

Orange County's Federal Credit Union: 322281989

Bank

Infinity Bank: 122245219

Credit union

Santa Ana Federal Credit Union: 322282027

Credit union

Comunidad Latina Federal Credit Union: 122287510

All routing numbers in California