Bank of O'Fallon 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 Bank of O'Fallon routing number?

The Bank of O'Fallon routing number is 081023019. It is the primary ABA routing transit number registered to Bank of O'Fallon, headquartered in O'Fallon, IL. 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 Bank of O'Fallon wire routing number?

This page lists 081023019, the primary routing number registered to Bank of O'Fallon. 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 Bank of O'Fallon before sending a wire.

Is ABA number 081023019 the routing number for Bank of O'Fallon?

Yes. ABA number 081023019 is the primary routing number registered to Bank of O'Fallon. 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 081023019?

Routing number 081023019 belongs to Bank of O'Fallon, headquartered in O'Fallon, IL. It is the bank's primary ABA routing number (FDIC certificate 18171).

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