| Name | Jefferson County |
| State | Indiana |
| FIPS Code | 18077 |
| County Seat | Madison |
| Timezone | Eastern Daylight Time (EDT) |
| Population (2024) | 32,938 |
| Population Growth Rate(2020-2024) | -0.63% |
| Majority Ethnicity | White 94.52% |
| Public School Majority Ethnicity | White 89% |
| Partisan Voting Index | Republican:+18 |
| Unemployment Rate (May 2026) | 3.6% |
| Sales Tax Rate (2025) | 7% |
| Area Code(s) | 812 / 930 |
| Race/Ethnicity | Percentage of Population (2023) |
|---|---|
| White | 94.52% |
| African American | 1.11% |
| Hispanic | 3.45% |
| Asian | 0.74% |
| Native American | 0.15% |
| Hawaiin/Pacific Islander | 0.02% |
| Race/Ethnicity | Percentage of Public School Students (2023) |
|---|---|
| White | 88.99% |
| African American | 1.02% |
| Hispanic | 5.12% |
| Asian | 0.8% |
| Native American | 0.25% |
| Hawaiin/Pacific Islander | 0.11% |