Statistics
Illinois banking statistics
How banks and credit unions headquartered in Illinois compare on size, branches and assets — from federal data.
518
Institutions Data as of Q1 2026
328
Banks Data as of Q1 2026
190
Credit unions Data as of Q1 2026
3,656
Branches Data as of Q1 2026
$842.33B
Total assets Data as of Q1 2026
$680.43B
Total deposits Data as of Q1 2026
Source: U.S. FDIC BankFind & NCUA 5300 Call Report (public data). Data sources · Data as of Q1 2026
Illinois’s share of the nation
What percentage of all U.S. institutions, branches and bank assets sit in Illinois.
Largest institutions in Illinois
| # | Institution | Type | Location | Total assets | Deposits | Branches |
|---|---|---|---|---|---|---|
| 1 | BMO Bank National Association | Bank | Chicago, IL | $251.96B | $193.96B | 990 |
| 2 | The Northern Trust Company | Bank | Chicago, IL | $173.84B | $142.29B | 67 |
| 3 | CIBC Bank USA | Bank | Chicago, IL | $65.13B | $50.96B | 19 |
| 4 | Alliant | Credit union | Chicago, IL | $19.66B | $16.32B | 1 |
| 5 | Busey Bank | Bank | Champaign, IL | $18.01B | $14.83B | 81 |
| 6 | Byline Bank | Bank | Chicago, IL | $9.89B | $7.83B | 55 |
| 7 | Wintrust Bank, National Association | Bank | Chicago, IL | $9.28B | $7.93B | 37 |
| 8 | Lake Forest Bank & Trust Company, National Association | Bank | Lake Forest, IL | $9B | $6.99B | 10 |
| 9 | Citizens Equity First | Credit union | Peoria, IL | $8.61B | $7.54B | 36 |
| 10 | First American Bank | Bank | Elk Grove Village, IL | $8.22B | $5.25B | 60 |
All Illinois institutions National statistics
Source: U.S. FDIC BankFind & NCUA 5300 Call Report (public data). Data sources · Data as of Q1 2026