Banks in Dupage County, Illinois
252 active bank branches operated by 43 institutions, per FDIC records.
Active branches
252
Banks present
43
Deposits (2026)
$55.0B
Closings since 2020
61
16 openings
Largest banks by deposits in Dupage County (2026)
| Bank | Deposits | Share | Branches |
|---|---|---|---|
| Chase Bank | $12.1B | 22% | 29 |
| PNC Bank | $6.0B | 11% | 14 |
| BMO Bank | $4.8B | 8.7% | 24 |
| Hinsdale Bank & Trust Company | $4.3B | 7.8% | 8 |
| Fifth Third Bank | $4.3B | 7.8% | 20 |
| Wheaton Bank & Trust | $4.1B | 7.5% | 7 |
| Citibank | $2.6B | 4.7% | 9 |
| U.S. Bank | $2.6B | 4.7% | 19 |
| Bank of America | $2.4B | 4.4% | 12 |
| Old Second National Bank | $1.8B | 3.3% | 22 |
Deposit location reflects the office to which deposits are reported and may not represent the residence of depositors.
Cities and towns
- Naperville (35)
- Elmhurst (18)
- Wheaton (15)
- Lombard (14)
- Downers Grove (13)
- Bloomingdale (10)
- Glen Ellyn (10)
- Hinsdale (9)
- Darien (9)
- Aurora (9)
- Westmont (8)
- Oak Brook (8)
- Addison (8)
- Lisle (8)
- Woodridge (8)
- Carol Stream (7)
- Bensenville (7)
- Villa Park (7)
- Glendale Heights (6)
- Roselle (5)
- Willowbrook (5)
- West Chicago (5)
- Wood Dale (4)
- Oakbrook Terrace (4)
- Itasca (3)
- Warrenville (3)
- Bartlett (3)
- Burr Ridge (3)
- Clarendon Hills (2)
- Winfield (1)
- Oakbrook (1)
- Oak Brook Terrace (1)
- Downers Grove Main (1)
- Hanover Park (1)
- Saint Charles (1)
Transcribed from FDIC BankFind Suite active-location records and the annual Summary of Deposits. County assignment follows the FDIC branch record.