Massac County's estimated 2026 population is 13,388 with a growth rate of -0.84% in the past year according to the most recent United States census data. Massac County is the 76th largest county in Illinois. The 2010 population was 15,380 and has seen a growth of -12.95% since that time.
Data after 2023 is projected based on recent change
Overall: 44.7 years
Female: 46.5 years
Male: 43.9 years
There are 10,910 adults, (3,049 of whom are seniors) in Massac County.
Female: 7,110 (51.3%)
Male: 6,755 (48.7%)
The racial composition of Massac County includes 86.33% White, 6.74% Black or African American, and smaller percentages for other race, Asian, Native American and multiracial populations.
Race | Population | Percentage (of total) |
|---|---|---|
| White | 11,970 | 86.33% |
| Black or African American | 934 | 6.74% |
| Two or more races | 859 | 6.2% |
| Other race | 46 | 0.33% |
| Asian | 39 | 0.28% |
| Native American | 17 | 0.12% |
Massac County's average per capita income is $41,844. Household income levels show a median of $65,116. The poverty rate stands at 16.27%.
Name | Median | Mean |
|---|---|---|
| Married Families | $93,703 | - |
| Families | $80,074 | $91,292 |
| Households | $65,116 | $75,960 |
| Non Families | $30,840 | $46,204 |
Average Income
Median Household Income
Poverty Rate