| Name | Massac County |
| State | Illinois |
| FIPS Code | 17127 |
| County Seat | Metropolis |
| Timezone | Central Daylight Time (CDT) |
| Population (2024) | 13,751 |
| Population Growth Rate(2020-2024) | -3.06% |
| Majority Ethnicity | White 90.19% |
| Public School Majority Ethnicity | White 81% |
| Partisan Voting Index | Strongly Republican:+25 |
| Unemployment Rate (May 2026) | 4.6% |
| Sales Tax Rate (2025) | 6.25% |
| Area Code(s) | 618 |
| Race/Ethnicity | Percentage of Population (2023) |
|---|---|
| White | 90.19% |
| African American | 6.49% |
| Hispanic | 2.85% |
| Asian | 0.39% |
| Native American | 0.07% |
| Hawaiin/Pacific Islander | 0% |
| Race/Ethnicity | Percentage of Public School Students (2023) |
|---|---|
| White | 80.76% |
| African American | 6.84% |
| Hispanic | 3.09% |
| Asian | 0.52% |
| Native American | 0.1% |
| Hawaiin/Pacific Islander | 0% |