| Name | Union County |
| State | Illinois |
| FIPS Code | 17181 |
| County Seat | Jonesboro |
| Timezone | Central Standard Time (CST) |
| Population (2022) | 17,799 |
| Population Growth Rate(2000-2022) | -3.17% |
| Majority Ethnicity | White 97.47% |
| Public School Majority Ethnicity | White 87% |
| Partisan Voting Index | Strongly Republican:+22 |
| Unemployment Rate (January 2025) | 4.4% |
| Area Code(s) | 618 |
| Race/Ethnicity | Percentage of Population (2022) |
|---|---|
| White | 97.47% |
| African American | 1.58% |
| Hispanic | 0.25% |
| Asian | 0.37% |
| Native American | 0.16% |
| Hawaiin/Pacific Islander | 0.16% |
| Race/Ethnicity | Percentage of Public School Students (2023) |
|---|---|
| White | 86.98% |
| African American | 1.21% |
| Hispanic | 9.01% |
| Asian | 0.79% |
| Native American | 0.04% |
| Hawaiin/Pacific Islander | 0.08% |