Southern Illinois 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 Southern Illinois Bank routing number?

The Southern Illinois Bank routing number is 081225901. It is the primary ABA routing transit number registered to Southern Illinois Bank, headquartered in Johnston City, 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 Southern Illinois Bank wire routing number?

This page lists 081225901, the primary routing number registered to Southern Illinois 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 Southern Illinois Bank before sending a wire.

Is ABA number 081225901 the routing number for Southern Illinois Bank?

Yes. ABA number 081225901 is the primary routing number registered to Southern Illinois 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 081225901?

Routing number 081225901 belongs to Southern Illinois Bank, headquartered in Johnston City, IL. It is the bank's primary ABA routing number (FDIC certificate 35229).

Routing numbers of similar-size institutions in Illinois

Bank, Streator, IL

Streator Home Savings Bank: 271973542

Bank, Litchfield, IL

The Litchfield National Bank: 081903540

Bank, Cherry, IL

State Bank of Cherry: 071112176

Bank, Rushville, IL

Rushville State Bank: 071105866

Bank, Pinckneyville, IL

First National Bank in Pinckneyville: 081905344

Credit union, Quincy, IL

United Community Credit Union: 281277364

Bank, Kampsville, IL

Bank of Kampsville: 081913860

Bank, Lake Forest, IL

Wintrust Private Trust Company, N.A.: 271250090

All routing numbers in Illinois