| Name | Madison County |
| State | Ohio |
| FIPS Code | 39097 |
| County Seat | London |
| Timezone | Eastern Daylight Time (EDT) |
| Population (2024) | 44,668 |
| Population Growth Rate(2020-2024) | 1.84% |
| Majority Ethnicity | White 90.91% |
| Public School Majority Ethnicity | White 81% |
| Partisan Voting Index | Strongly Republican:+22 |
| Unemployment Rate (May 2026) | 4.1% |
| Sales Tax Rate (2025) | 7% |
| Area Code(s) | 220 / 740 / 380 / 614 / 326 / 937 |
| Race/Ethnicity | Percentage of Population (2023) |
|---|---|
| White | 90.91% |
| African American | 4.9% |
| Hispanic | 3.06% |
| Asian | 0.91% |
| Native American | 0.2% |
| Hawaiin/Pacific Islander | 0.02% |
| Race/Ethnicity | Percentage of Public School Students (2023) |
|---|---|
| White | 81.19% |
| African American | 2.17% |
| Hispanic | 5.52% |
| Asian | 6.02% |
| Native American | 0.07% |
| Hawaiin/Pacific Islander | 0.05% |