| Name | Mason County |
| State | Illinois |
| FIPS Code | 17125 |
| Timezone | Central Daylight Time (CDT) |
| Population (2022) | 14,636 |
| Population Growth Rate(2000-2022) | -10.77% |
| Majority Ethnicity | White 97.68% |
| Public School Majority Ethnicity | White 96% |
| Partisan Voting Index | Republican:+16 |
| Unemployment Rate | 6.0% |
| Race/Ethnicy | Percentage of Population (2018) |
|---|---|
| White | 97.68% |
| African American | 0.95% |
| Hispanic | 1.07% |
| Asian | 0.2% |
| Native American | 0.1% |
| Hawaiin/Pacific Islander | 0% |
| Race/Ethnicy | Percentage of Public School Students (2018) |
|---|---|
| White | 95.68% |
| African American | 0.6% |
| Hispanic | 0.94% |
| Asian | 0.21% |
| Native American | 0.17% |
| Hawaiin/Pacific Islander | 0% |