Bank Routing Number

FirstBank Southwest Routing Number

The primary ABA routing number (RTN) for FirstBank Southwest, Amarillo, TX is shown below.

Primary ABA / RTN

111308057

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 FirstBank Southwest routing number?

The FirstBank Southwest routing number is 111308057. It is the primary ABA routing transit number registered to FirstBank Southwest, headquartered in Amarillo, TX. 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 FirstBank Southwest wire routing number?

This page lists 111308057, the primary routing number registered to FirstBank Southwest. 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 FirstBank Southwest before sending a wire.

Is ABA number 111308057 the routing number for FirstBank Southwest?

Yes. ABA number 111308057 is the primary routing number registered to FirstBank Southwest. 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 111308057?

Routing number 111308057 belongs to FirstBank Southwest, headquartered in Amarillo, TX. It is the bank's primary ABA routing number (FDIC certificate 3387).

Routing numbers in Amarillo, TX

Bank: Amarillo National Bank: 111300958
Bank: Herring Bank: 111302846
Credit union: Education Credit Union: 311376782
Credit union: ACFCU Federal Credit Union: 311376740
Bank: Citizens Bank: 111308277
Credit union: The People's Federal Credit Union: 311376753
Credit union: Santa Fe Federal Credit Union: 311376850
Credit union: Access Community Credit Union: 311376902

All routing numbers in Texas

View FirstBank Southwest's full profile →

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Regulator records: FDIC BankFind (cert 3387) · FFIEC NIC profile (RSSD 840363)