| Name | Miami County |
| State | Ohio |
| FIPS Code | 39109 |
| County Seat | Troy |
| Timezone | Eastern Daylight Time (EDT) |
| Population (2024) | 110,898 |
| Population Growth Rate(2020-2024) | 1.92% |
| Majority Ethnicity | White 93.9% |
| Public School Majority Ethnicity | White 87% |
| Partisan Voting Index | Strongly Republican:+23 |
| Unemployment Rate (May 2026) | 4.3% |
| Sales Tax Rate (2025) | 7% |
| Area Code(s) | 326 / 937 |
| Race/Ethnicity | Percentage of Population (2023) |
|---|---|
| White | 93.9% |
| African American | 2.13% |
| Hispanic | 2.16% |
| Asian | 1.75% |
| Native American | 0.06% |
| Hawaiin/Pacific Islander | 0.01% |
| Race/Ethnicity | Percentage of Public School Students (2023) |
|---|---|
| White | 86.82% |
| African American | 2.57% |
| Hispanic | 3.12% |
| Asian | 1.34% |
| Native American | 0.06% |
| Hawaiin/Pacific Islander | 0.12% |