Miami County, Ohio, a county in the Dayton-Springfield-Kettering, OH market, holds $2.2B in deposits across 14 insured institutions and 30 branches. Fifth Third Bank, National Association is the largest deposit holder at 27.7% share. The top three banks hold 50% of deposits, which places the county in the Moderate band. Deposits have grown 19.5% since 2020 while the branch count fell by 14.3%. It produces $4.7B of output, ranking #630 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: 35 in 2020 to 30 in 2025. Institutions: 15 to 14. Top-three share: 53% to 50%.
Institutions by deposits
| Institution | Deposits | Share | 5‑yr deposits |
|---|---|---|---|
| Fifth Third Bank | $605M | 27.7% | +18% |
| JPMorgan Chase Bank | $258M | 11.8% | +26% |
| The Park National Bank | $236M | 10.8% | -1% |
| U.S. Bank | $222M | 10.2% | +1% |
| PNC Bank | $178M | 8.1% | +73% |
| First Financial Bank | $161M | 7.4% | +19% |
| First Bank Richmond | $91M | 4.2% | +18% |
| The Huntington National Bank | $87M | 4.0% | +34% |
| Greenville National Bank | $71M | 3.3% | +86% |
| Minster Bank | $66M | 3.0% | +14% |
| Monroe Federal Savings and Loan Association | $62M | 2.8% | +28% |
| The Covington Savings and Loan Association | $58M | 2.7% | +7% |
| Union Savings Bank | $46M | 2.1% | +28% |
| Greenville Federal | $41M | 1.9% | +92% |
The 14 insured institutions with a branch presence in this county, per the FDIC Summary of Deposits, 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. “No 2020 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 Dayton-Springfield-Kettering market
Miami County is one of 7 counties that make up the Dayton-Springfield-Kettering, OH market, a Combined Statistical Area (ranked #64 of 293 U.S. markets by economic output). It produces 7.7% of the market’s output and holds 10.2% of its deposits.
| Measure | Miami County | Share of parent market |
|---|---|---|
| 2024 GDP | $4.7B | 7.7% |
| Deposits | $2.2B | 10.2% |
| Population | 112,634 | 10.2% |
View the full Dayton-Springfield-Kettering market profile →
Recruiting in Miami 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 Miami County.
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