Rock Island County, Illinois, a core county of the Davenport-Moline, IA-IL market, holds $2.9B in deposits across 16 insured institutions and 44 branches. Blackhawk Bank & Trust is the largest deposit holder at 40.3% share. The top three banks hold 55% of deposits, which places the county in the Moderate band. Deposits have fallen 0.6% since 2021 while the branch count fell by 2.2%. It produced $9.9B of real gross domestic product in 2024, ranking #366 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: 45 in 2021 to 44 in 2026. Institutions: 17 to 16. Top-three share: 53% to 55%.
Institutions by deposits
| Institution | Deposits | Share | 5‑yr deposits |
|---|---|---|---|
| Blackhawk Bank & Trust | $1.2B | 40.3% | +33% |
| TBK Bank, SSB | $235M | 8.0% | -15% |
| Quad City Bank and Trust Company | $193M | 6.6% | -10% |
| CBI Bank & Trust | $185M | 6.3% | +1% |
| Old National Bank | $181M | 6.2% | -54% |
| Wells Fargo Bank | $172M | 5.8% | -12% |
| American Bank and Trust Company | $172M | 5.8% | -18% |
| JPMorgan Chase Bank | $164M | 5.6% | +19% |
| U.S. Bank | $133M | 4.5% | +6% |
| BankOrion | $100M | 3.4% | +25% |
| Peoples National Bank of Kewanee | $74M | 2.5% | -18% |
| Midwest Bank | $50M | 1.7% | +22% |
| Morton Community Bank | $47M | 1.6% | -20% |
| Union Federal Savings and Loan Association | $28M | 0.9% | -10% |
| First National Bank | $22M | 0.8% | -11% |
| Woodforest National Bank | $2M | 0.1% | +8% |
The 16 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 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 22.3% of its deposits.
| Measure | Rock Island County | Share of parent market |
|---|---|---|
| 2024 GDP | $9.9B | 36.2% |
| Deposits | $2.9B | 22.3% |
| 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.
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