First Security Bank Routing Number (ABA): 071109655

First Security Bank at a glance

It reports no CET1 ratio; its Tier 1 leverage ratio was 9.22% at Q2 2026, above the 9% community bank leverage ratio requirement for being considered well capitalized.

Total assets, Q2 2026

$151.1M

Tier 1 leverage ratio, Q2 2026

9.22%

Deposit insurance

FDIC

Regulator

FDIC

Domestic offices

4 FDIC institution directory, current count

Established

1934

Full financial profile · Is First Security Bank safe? · Branch locations

What the digits mean

The first two digits, 07, place this number in the Federal Reserve Bank of Chicago's district (District 7). Digits five through eight, 0965, 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 Security Bank

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 Security Bank checks or in its online banking. Ask the bank for wire instructions (www.fsb1.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 Security Bank

First Security Bank is headquartered in Mackinaw, Illinois and was established in 1934. It is in the PEORIA, IL metro area. It reported $151.1M in total assets and $126.0M in deposits for Q2 2026, the 226th largest of the 319 banks headquartered in Illinois. See the largest banks in Illinois by total assets. It reports 4 domestic offices. Its deposits have been FDIC insured since 1934. Its primary federal regulator is the FDIC.

What the digits in 071109655 mean

The first four digits, 0711, are the Federal Reserve routing symbol. The prefix 07 places the number in the 7th Federal Reserve District (Chicago). That is also the district where the bank is headquartered. Digits five through eight, 0965, 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 7 + 7 x 12 + 15 = 120, a multiple of 10, so 071109655 is a well-formed routing number. A mistyped digit almost always breaks that sum.

What is the First Security Bank routing number?

The First Security Bank routing number is 071109655. It is the primary ABA routing transit number registered to First Security Bank, headquartered in Mackinaw, IL. The number comes from the FFIEC National Information Center institution record, last refreshed here on October 27, 2026.

What is the First Security Bank wire routing number?

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

Is ABA number 071109655 the routing number for First Security Bank?

Yes. It is the primary routing number registered to First Security Bank.

Which bank uses routing number 071109655?

It belongs to First Security Bank, headquartered in Mackinaw, IL. It is the bank's primary ABA routing number (FDIC certificate 3698).

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