DuPage County, Illinois, a core county of the Chicago-Naperville, IL-IN-WI market, holds $55.0B in deposits across 44 insured institutions and 250 branches. JPMorgan Chase Bank is the largest deposit holder at 22.0% share. The top three banks hold 42% of deposits, which places the county in the Fragmented band. Deposits have grown 6.0% since 2021 while the branch count fell by 11.0%. It produced $101.7B of real gross domestic product in 2024, ranking #46 of the 1,523 ranked counties by economic output.
Ranks show where the county stands among the 1,523 ranked counties (those within a Combined or Metropolitan Statistical Area that have a branch). They describe relative position, not a rating of market quality or suitability.
Deposit trend
Branches: 281 in 2021 to 250 in 2026. Institutions: 50 to 44. Top-three share: 43% to 42%.
Institutions by deposits
The 44 insured institutions with a branch presence in this county, per the FDIC Summary of Deposits, June 30, 2026. Five-year change compares the same institution’s county deposits in 2021 and 2026. Institutions are tracked by FDIC certificate number, and where an institution acquired another bank, the acquired bank’s prior deposits are folded into the baseline so the change reflects the combined, continuing franchise rather than reading as new. “No 2021 presence” means neither the institution nor a bank it later absorbed reported deposits in this county that year. Deposit figures are nominal and are not adjusted for inflation.
Part of the Chicago-Naperville market
DuPage County is one of 19 counties that make up the Chicago-Naperville, IL-IN-WI market, a Combined Statistical Area (ranked #5 of 293 U.S. markets by economic output). It produces 13.5% of the market’s output and holds 8.5% of its deposits.
| Measure | DuPage County | Share of parent market |
|---|---|---|
| 2024 GDP | $101.7B | 13.5% |
| Deposits | $55.0B | 8.5% |
| Population | 934,298 | 9.4% |
View the full Chicago-Naperville market profile →
Recruiting in DuPage County
Deposits are spread across a competitive field of institutions, so the bankers worth recruiting are dispersed across more of them. Who holds the deposits, and how contested the market is, shapes both the runway for growth and the competition you would be recruiting against. We recruit commercial relationship managers, banking teams, and market leaders for banks building in markets like DuPage County.
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