McHenry County, Illinois, a core county of the Chicago-Naperville, IL-IN-WI market, holds $9.5B in deposits across 24 insured institutions and 79 branches. Crystal Lake Bank and Trust Company, National Association is the largest deposit holder at 17.1% share. The top three institutions hold 46.2% of deposits, which places the county in the moderately concentrated band. Deposits have grown 13.1% since 2020 while the branch count fell by 22. It produces $12.1B of output, ranking #322 of the 1,523 counties within a CSA or MSA by economic output.
Deposit trend
Branches: 101 in 2020 to 79 in 2025. Institutions: 28 to 24. Top-three share: 42.1% to 46.2%.
Leading institutions by deposits
| Institution | Deposits | Share | 5‑yr |
|---|---|---|---|
| Crystal Lake Bank and Trust Company, National Association | $1.6B | 17.1% | +48% |
| JPMorgan Chase Bank, National Association | $1.4B | 14.7% | +19% |
| BMO Bank National Association | $1.4B | 14.3% | +8% |
| American Community Bank & Trust | $894M | 9.5% | +30% |
| Home State Bank, National Association | $679M | 7.2% | +17% |
| Fifth Third Bank, National Association | $529M | 5.6% | +29% |
| First National Bank of Omaha | $419M | 4.4% | +27% |
| Old National Bank | $326M | 3.5% | -13% |
| First Secure State Bank | $244M | 2.6% | +10% |
| U.S. Bank National Association | $237M | 2.5% | +9% |
The 10 insured institutions with a branch presence in this county, as of June 30, 2025. Five-year change compares the same institution’s county deposits in 2020 and 2025. 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. Even so, a large gain can reflect acquisition rather than competitive growth; “no 2020 presence” means neither the institution nor a bank it later absorbed reported deposits in this county that year.
Part of the Chicago-Naperville market
McHenry 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 1.6% of the market’s output and holds 1.5% of its deposits.
| Measure | McHenry County | Share of Chicago-Naperville market |
|---|---|---|
| 2024 GDP | $12.1B | 1.6% |
| Deposits | $9.5B | 1.5% |
| Population | 317,751 | 3.2% |
View the full Chicago-Naperville market profile →
Recruiting in McHenry County
Deposits are split among a moderate number of institutions. 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 McHenry County, on a retained basis.
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