Bank INB, National Association
INB, National Association is a federally insured bank based in Springfield, Illinois.
- Type
- Bank
- Charter
- National commercial bank (OCC-chartered)
- Primary regulator
- OCC
- Established
- January 1, 1905
- Headquarters
- Springfield, IL
- FDIC certificate #
- 3664
- Fed RSSD ID
- 925037
- Holding company
- Illinois National Bcorp Inc
- Website
- www.inb.com
Source: U.S. FDIC BankFind & NCUA 5300 Call Report (public data). Data sources · Data as of Q1 2026
Branches by state
INB, National Association operates 14 branch locations across 2 states. Select a state to drill down to its towns and individual branches.
Ownership
INB, National Association is owned by Illinois National Bcorp Inc. See the full ownership & merger history.
INB, National Association 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 INB, National Association’s $2.54B in assets.
- One Community Bank $2.55B
- Republic Bank of Chicago $2.54B
- United Bank of Iowa $2.53B
- First National Bank $2.55B
- South Shore Bank $2.56B
- Nelnet Bank $2.52B