FDIC-insured bank
First Security Bank — Mackinaw, IL
Bank headquartered in Mackinaw, Illinois, part of FIRST BCORP OF TAYLORVILLE INC.
Source: FDIC BankFind Suite, data as of June 30, 2026, fetched September 5, 2026
Headquarters and contact
| Address | 101 E Fast Ave Mackinaw, IL 61755 |
| County | Tazewell |
| Metro area | Peoria, IL |
| Website | www.fsb1.com |
| Phone | not published in FDIC data, see the bank's website |
FDIC record
| FDIC Certificate | 3698 |
| Federal Reserve RSSD ID | 416339 |
| Status | Active |
| Charter class | NM (STATE) |
| Holding company | FIRST BCORP OF TAYLORVILLE INC |
| Domestic offices | 4 |
| Financials as of | June 30, 2026 |
How to find your First Security Bank routing number
FDIC does not publish ABA routing numbers, and many banks use different routing numbers by state or by account type. The reliable places to find yours: the bottom left of a check from this bank, the "account details" screen in its online banking, or its official website at www.fsb1.com.
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Offices nearest to headquarters
| First Security Bank main office Mackinaw, IL |
101 E Fast Ave, 61755 |
| Heritage Lake Branch Mackinaw, IL |
#2 Bradford Drive, 61755 |
| Deer Creek Branch Deer Creek, IL |
201 E 1st Ave, 61733 |
| Danvers Branch Danvers, IL |
116 E Exchange St, 61732 |
Where First Security Bank has offices
Cities with the most First Security Bank offices
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| Byline Bank Chicago | $9.91 billion |
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| First Mid Bank & Trust, National Association Mattoon | $9.14 billion |
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