| Place Name | New Madison |
| Place Type | Village |
| ZIP Code(s) | 45346 |
| County | Darke County |
| Area Code(s) | 326,937 |
| Timezone | Eastern Daylight Time (EDT) |
| Population (2022) | 828 |
| Population Growth Rate (2010-19) | -5.83% |
| Majority Ethnicity | White 98.57% |
| Metro/Micro Stats Area | Greenville, OH |
| US Congressional District(s) | Ohio 8th |
| State House Districts | 80 |
| State Senate Districts | 5 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 98.57% |
| African American | 0% |
| Hispanic | 0% |
| Asian | 0% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 1.43% |