Branch Network
First Secure State Bank Locations & Branches Wonder Lake, Illinois
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First Secure State Bank operates 7 branches from its headquarters in Wonder Lake, IL, .
First Secure State Bank branch network
All 7 branches are in ILLINOIS, across 5 cities. Wonder Lake, IL has the most of its branches, 2. Its largest office by deposits is its main office in Wonder Lake, IL, with $67.5M (27.1% of its branch deposits). It had the same number of branches on June 30, 2025.
First Secure State Bank at a glance
Its CET1 capital ratio was 17.48% at Q2 2026, comfortably above the 7% level required once the capital conservation buffer is included.
- Total assets, Q2 2026
- $305.6M
- CET1 ratio, Q2 2026
- 17.48%
- Deposit insurance
- FDIC
- Regulator
- FDIC
- Latest call report
- Q2 2026, FFIEC 051
- Established
- 1979
Full financial profile · Is First Secure State Bank safe? · First Secure State Bank call report · Routing number
Deposit market share
Share of all FDIC-insured deposits held in each area, from the June 30, 2026 Summary of Deposits. Rank 1 is the largest holder. Shares are by bank charter, not by holding company.
| Area | Rank | Deposit share | Deposits |
|---|---|---|---|
| City: Wonder Lake, IL (2 branches) | 1 of 1 | 100.0% | $80.4M |
| State: IL (7 branches) | 184 of 379 | <0.1% | $249.3M |
Ranked by total assets among banks headquartered in the state: Largest banks in Illinois.
Share by county and metro area
First Secure State Bank's share of FDIC-insured deposits in the counties and metro areas where it has branches, from the June 30, 2026 Summary of Deposits. Up to the ten largest of each are shown, by the bank's deposits. Rank 1 is the largest holder. Banks only: credit unions are not in the Summary of Deposits.
Counties
| County | Rank | Deposit share | Deposits | County total |
|---|---|---|---|---|
| Mchenry, IL (7 branches) | 11 of 24 | 2.5% | $249.3M | $9.84B |
Metro areas
| Metro area | Rank | Deposit share | Deposits | Metro total |
|---|---|---|---|---|
| Chicago-Naperville-Elgin, IL-IN-WI (7 branches) | 92 of 150 | <0.1% | $249.3M | $632.03B |
| Branch | Location | ZIP | Deposits |
|---|---|---|---|
| First Secure State Bank (main office) | Wonder Lake, IL | 60097 | $67.5M |
| Spring Grove Branch | Spring Grove, IL | 60081 | $53.2M |
| Johnsburg Facility | Johnsburg, IL | 60051 | $48.6M |
| HarvardAyer Branch | Harvard, IL | 60033 | $48.4M |
| Lakemoor Branch | Lakemoor, IL | 60051 | $12.9M |
| Wonder Lake West Branch | Wonder Lake, IL | 60097 | $12.8M |
| Harvard North Branch | Harvard, IL | 60033 | $5.9M |
Source: FDIC Summary of Deposits, June 30, 2026. How the survey works.
Regulator records: FDIC BankFind (cert 22971) · FFIEC NIC profile (RSSD 285348)