| Name | Darke County |
| State | Ohio |
| FIPS Code | 39037 |
| County Seat | Greenville |
| Timezone | Eastern Daylight Time (EDT) |
| Population (2024) | 51,432 |
| Population Growth Rate(2020-2024) | -0.86% |
| Majority Ethnicity | White 97.1% |
| Public School Majority Ethnicity | White 94% |
| Partisan Voting Index | Strongly Republican:+33 |
| Unemployment Rate (May 2026) | 4.8% |
| Sales Tax Rate (2025) | 7.25% |
| Area Code(s) | 326 / 937 / 419 / 567 |
| Race/Ethnicity | Percentage of Population (2023) |
|---|---|
| White | 97.1% |
| African American | 0.56% |
| Hispanic | 1.82% |
| Asian | 0.48% |
| Native American | 0.05% |
| Hawaiin/Pacific Islander | 0% |
| Race/Ethnicity | Percentage of Public School Students (2023) |
|---|---|
| White | 94.5% |
| African American | 0.51% |
| Hispanic | 2.21% |
| Asian | 0.32% |
| Native American | 0.14% |
| Hawaiin/Pacific Islander | 0.12% |