| Name | Johnson County |
| State | Illinois |
| FIPS Code | 17087 |
| Timezone | Central Standard Time (CST) |
| Population (2022) | 12,653 |
| Population Growth Rate(2000-2022) | 5.77% |
| Majority Ethnicity | White 86.27% |
| Public School Majority Ethnicity | White 95% |
| Partisan Voting Index | Strongly Republican:+28 |
| Unemployment Rate | 6.3% |
| Race/Ethnicy | Percentage of Population (2018) |
|---|---|
| White | 86.27% |
| African American | 9.21% |
| Hispanic | 4.2% |
| Asian | 0.33% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 0% |
| Race/Ethnicy | Percentage of Public School Students (2018) |
|---|---|
| White | 95.12% |
| African American | 0.22% |
| Hispanic | 1.21% |
| Asian | 0.38% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 0% |