Bank Security Bank, s.b.
Security Bank, s.b. is a federally insured bank based in Springfield, Illinois.
- Type
- Bank
- Charter
- State-chartered savings institution
- Primary regulator
- FDIC
- Established
- January 1, 1906
- Headquarters
- Springfield, IL
- FDIC certificate #
- 27723
- Fed RSSD ID
- 218878
- Holding company
- Security Midwest Bcorp Inc
- Website
- www.securitybk.com
Source: U.S. FDIC BankFind & NCUA 5300 Call Report (public data). Data sources · Data as of Q1 2026
Branches by state
Security Bank, s.b. operates 3 branch locations in Illinois. Select a state to drill down to its towns and individual branches.
Ownership
Security Bank, s.b. is owned by Security Midwest Bcorp Inc. See the full ownership & merger history.
Security Bank, s.b. financial summary
Other banks in Illinois
Federally insured banks headquartered in Illinois, by total assets.
- BMO Bank National Association $251.96B
- The Northern Trust Company $173.84B
- CIBC Bank USA $65.13B
- Busey Bank $18.01B
- Byline Bank $9.89B
- Wintrust Bank, National Association $9.28B
- Lake Forest Bank & Trust Company, National Association $9B
- First American Bank $8.22B
Similar-size banks
Institutions close to Security Bank, s.b.’s $251.5M in assets.
- The Bank of Monroe $251.2M
- Union State Bank of Hazen $251.8M
- Bodcaw Bank $251M
- Bank of Easton $250.9M
- The Idabel National Bank $250.8M
- Bank of Alapaha $250.7M