| Name | Jefferson County |
| State | Illinois |
| FIPS Code | 17081 |
| Timezone | Central Daylight Time (CDT) |
| Population (2022) | 38,908 |
| Population Growth Rate(2000-2022) | -4.41% |
| Majority Ethnicity | White 87.76% |
| Public School Majority Ethnicity | White 78% |
| Partisan Voting Index | Republican:+20 |
| Unemployment Rate | 4.8% |
| Race/Ethnicy | Percentage of Population (2018) |
|---|---|
| White | 87.76% |
| African American | 8.4% |
| Hispanic | 2.54% |
| Asian | 1.18% |
| Native American | 0.12% |
| Hawaiin/Pacific Islander | 0% |
| Race/Ethnicy | Percentage of Public School Students (2018) |
|---|---|
| White | 78.18% |
| African American | 11.07% |
| Hispanic | 2.43% |
| Asian | 1.16% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 0% |