| Name | Marshall County |
| State | Illinois |
| FIPS Code | 17123 |
| Timezone | Central Daylight Time (CDT) |
| Population (2022) | 12,567 |
| Population Growth Rate(2000-2022) | -7.1% |
| Majority Ethnicity | White 95.97% |
| Public School Majority Ethnicity | White 94% |
| Partisan Voting Index | Republican:+15 |
| Unemployment Rate | 5.9% |
| Race/Ethnicy | Percentage of Population (2018) |
|---|---|
| White | 95.97% |
| African American | 0.41% |
| Hispanic | 3.01% |
| Asian | 0.31% |
| Native American | 0.15% |
| Hawaiin/Pacific Islander | 0.15% |
| Race/Ethnicy | Percentage of Public School Students (2018) |
|---|---|
| White | 94.47% |
| African American | 0.63% |
| Hispanic | 2.58% |
| Asian | 0.21% |
| Native American | 0.05% |
| Hawaiin/Pacific Islander | 0.16% |