First Security Bank
Mackinaw, IL · Owner: First Bcorp of Taylorville Inc
$151M
total assets, June 30, 2026
$151M
total assets, June 30, 2026
First Security Bank is a state nonmember bank based in Mackinaw, IL, owned by First Bcorp of Taylorville Inc. As of June 30, 2026 it held $151.1 million in assets and $126.0 million in deposits; assets were up 17.9% from a year before. It has 4 branches.
Updated Oct 11, 2026 · numbers as of June 30, 2026
Total assets
$151M
+17.9% in a year · +1.5% in a quarter
Deposits
$126M
+12.1% in a year · -0.9% in a quarter
Loans
$124M
+25.4% in a year · +2.5% in a quarter
Profit so far
$837K
Jan 1 to Jun 30, 2026 · +19.4% in a year
Capital ratio
9.22%
-0.80 pts in a year
Return on assets
1.14%
+0.04 pts in a year
Facts
- Type
- State nonmember bank
- Head office
- 101 E Fast Ave, Mackinaw, IL, 61755
- County
- Tazewell
- Holding company
- First Bcorp of Taylorville Inc
- Established
- Jan 1, 1934
- Employees
- 27
- Branches
- 4
- Website
- www.fsb1.com
- Id
- b3698
Quarter by quarter
March 31, 1984 to June 30, 2026
Assets, deposits and loans
Each quarter end, US dollars
Profit by quarter
Net income of each quarter, the last 12
Ratios
Percent. Return on assets and net interest margin are yearly rates.
Branches
4 offices as of June 30, 2026, holding $126.0 million in deposits
Branch map
Every branch, sized by its deposits
| State | Branches | Deposits | Share |
|---|---|---|---|
| Illinois | 4 | $126M | 100.0% |
| Largest branches | Place | Deposits |
|---|---|---|
| First Security Bank (main office) | Mackinaw, IL | $68.3M |
| Danvers Branch | Danvers, IL | $35.6M |
| Heritage Lake Branch | Mackinaw, IL | $11.8M |
| Deer Creek Branch | Deer Creek, IL | $10.2M |
Related pages
Questions and answers
How big is First Security Bank?
$151.1 million in total assets and $126.0 million in deposits as of June 30, 2026, with assets up 17.9% from a year before. Its loans were $123.7 million.
How many branches does First Security Bank have?
4 branches in Illinois as of June 30, 2026.
Is First Security Bank profitable?
Yes: it earned $837,000 from January 1 to June 30, 2026 (up 19.4% from the same months a year before). Its return on assets was 1.14% a year; about 1% is typical.
Who owns First Security Bank?
First Security Bank is owned by First Bcorp of Taylorville Inc, its holding company.
Official public data from the reports every insured bank files each quarter. Profit so far runs from January 1 to the quarter end. Branch deposits are counted once a year, as of June 30. New quarters appear about two months after the quarter ends.