| Name | Carroll County |
| State | Illinois |
| FIPS Code | 17015 |
| County Seat | Mount Carroll |
| Timezone | Central Standard Time (CST) |
| Population (2022) | 15,338 |
| Population Growth Rate(2000-2022) | 2.05% |
| Majority Ethnicity | White 95.47% |
| Public School Majority Ethnicity | White 88% |
| Partisan Voting Index | Republican:+12 |
| Unemployment Rate (November 2024) | 4.4% |
| Area Code(s) | 815 / 779 |
| Race/Ethnicity | Percentage of Population (2022) |
|---|---|
| White | 95.47% |
| African American | 3.57% |
| Hispanic | 0.27% |
| Asian | 0.69% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 0% |
| Race/Ethnicity | Percentage of Public School Students (2023) |
|---|---|
| White | 87.95% |
| African American | 0.4% |
| Hispanic | 7.19% |
| Asian | 0.3% |
| Native American | 0.1% |
| Hawaiin/Pacific Islander | 0% |