Rock Island County, Illinois, a core county of the Davenport-Moline, IA-IL market, holds $3.1B in deposits across 16 insured institutions and 44 branches. Blackhawk Bank & Trust is the largest deposit holder at 34.9% share. The top three institutions hold 54.1% of deposits, which places the county in the moderately concentrated band. Deposits have grown 18.8% since 2020 while the branch count fell by 3. It produces $9.9B of output, ranking #366 of the 1,523 counties within a CSA or MSA by economic output.
Deposit trend
Branches: 47 in 2020 to 44 in 2025. Institutions: 17 to 16. Top-three share: 49.9% to 54.1%.
Leading institutions by deposits
| Institution | Deposits | Share | 5‑yr |
|---|---|---|---|
| Blackhawk Bank & Trust | $1.1B | 34.9% | +42% |
| Old National Bank | $346M | 11.2% | +27% |
| Quad City Bank and Trust Company | $249M | 8.0% | +25% |
| American Bank and Trust Company, National Association | $245M | 7.9% | +12% |
| TBK BANK, SSB | $234M | 7.5% | -12% |
| CBI Bank & Trust | $170M | 5.5% | +385% |
| Wells Fargo Bank, National Association | $162M | 5.2% | -15% |
| JPMorgan Chase Bank, National Association | $155M | 5.0% | +27% |
| U.S. Bank National Association | $129M | 4.2% | +14% |
| BankOrion | $96M | 3.1% | +40% |
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 organic growth; “no 2020 presence” means neither the institution nor a bank it later absorbed reported deposits in this county that year.
Part of the Davenport-Moline market
Rock Island County is one of 6 counties that make up the Davenport-Moline, IA-IL market, a Combined Statistical Area (ranked #105 of 293 U.S. markets by economic output). It produces 36.2% of the market’s output and holds 23.9% of its deposits.
| Measure | Rock Island County | Share of Davenport-Moline market |
|---|---|---|
| 2024 GDP | $9.9B | 36.2% |
| Deposits | $3.1B | 23.9% |
| Population | 141,869 | 30.3% |
View the full Davenport-Moline market profile →
Recruiting in Rock Island 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 Rock Island County, on a retained basis.
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