| Name | Montgomery County |
| State | Ohio |
| FIPS Code | 39113 |
| County Seat | Dayton |
| Timezone | Eastern Daylight Time (EDT) |
| Population (2024) | 535,313 |
| Population Growth Rate(2020-2024) | -0.37% |
| Majority Ethnicity | White 72.02% |
| Public School Majority Ethnicity | White 55% |
| Partisan Voting Index | Democratic:+0 |
| Unemployment Rate (May 2026) | 4.8% |
| Sales Tax Rate (2025) | 7.5% |
| Area Code(s) | 326 / 937 |
| Race/Ethnicity | Percentage of Population (2023) |
|---|---|
| White | 72.02% |
| African American | 21.32% |
| Hispanic | 4.22% |
| Asian | 2.25% |
| Native American | 0.17% |
| Hawaiin/Pacific Islander | 0.02% |
| Race/Ethnicity | Percentage of Public School Students (2023) |
|---|---|
| White | 55.06% |
| African American | 29.31% |
| Hispanic | 5.74% |
| Asian | 2.41% |
| Native American | 0.13% |
| Hawaiin/Pacific Islander | 0.09% |