Branch Network
Security Bank, S.B. Locations & Branches Springfield, Illinois
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Security Bank, S.B. operates 3 branches from its headquarters in Springfield, IL, .
Security Bank, S.B. branch network
All 3 branches are in ILLINOIS. Its largest office by deposits is its main office in Springfield, IL, with $92.1M (49.7% of its branch deposits). It had the same number of branches on June 30, 2025.
Security Bank, S.B. at a glance
Its CET1 capital ratio was 18.26% at Q2 2026, comfortably above the 7% level required once the capital conservation buffer is included.
- Total assets, Q2 2026
- $244.5M
- CET1 ratio, Q2 2026
- 18.26%
- Deposit insurance
- FDIC
- Regulator
- FDIC
- Established
- 1906
Full financial profile · Is Security Bank, S.B. safe? · 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: Springfield, IL (3 branches) | 11 of 21 | 2.4% | $185.5M |
| State: IL (3 branches) | 218 of 379 | <0.1% | $185.5M |
Ranked by total assets among banks headquartered in the state: Largest banks in Illinois.
Share by county and metro area
Security Bank, S.B.'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 |
|---|---|---|---|---|
| Sangamon, IL (3 branches) | 11 of 24 | 2.0% | $185.5M | $9.40B |
Metro areas
| Metro area | Rank | Deposit share | Deposits | Metro total |
|---|---|---|---|---|
| Springfield, IL (3 branches) | 12 of 26 | 1.9% | $185.5M | $9.76B |
| Branch | Location | ZIP | Deposits |
|---|---|---|---|
| Security Bank, S.B. (main office) | Springfield, IL | 62701 | $92.1M |
| 2500 Stevenson Drive Branch | Springfield, IL | 62703 | $49.0M |
| 3001 Chatham Road Branch | Springfield, IL | 62704 | $44.4M |
Source: FDIC Summary of Deposits, June 30, 2026. How the survey works.
Regulator records: FDIC BankFind (cert 27723) · FFIEC NIC profile (RSSD 218878)