| Name | Mcdonough County |
| State | Illinois |
| FIPS Code | 17109 |
| County Seat | Macomb |
| Timezone | Central Daylight Time (CDT) |
| Population (2022) | 32,568 |
| Population Growth Rate(2000-2022) | -16.48% |
| Majority Ethnicity | White 91.76% |
| Public School Majority Ethnicity | White 79% |
| Partisan Voting Index | Republican:+10 |
| Unemployment Rate (June 2025) | 3.1% |
| Area Code(s) | 309 |
| Race/Ethnicity | Percentage of Population (2022) |
|---|---|
| White | 91.76% |
| African American | 5.56% |
| Hispanic | 0.02% |
| Asian | 2.61% |
| Native American | 0.03% |
| Hawaiin/Pacific Islander | 0.03% |
| Race/Ethnicity | Percentage of Public School Students (2023) |
|---|---|
| White | 78.64% |
| African American | 9.3% |
| Hispanic | 3.54% |
| Asian | 1.51% |
| Native American | 0.33% |
| Hawaiin/Pacific Islander | 0.03% |