Clark County's estimated 2026 population is 15,087 with a growth rate of -0.18% in the past year according to the most recent United States census data. Clark County is the 69th largest county in Illinois. The 2010 population was 16,291 and has seen a growth of -7.39% since that time.
Data after 2023 is projected based on recent change
Overall: 42.6 years
Female: 43.8 years
Male: 40.8 years
There are 11,854 adults, (3,095 of whom are seniors) in Clark County.
Female: 7,581 (49.7%)
Male: 7,685 (50.3%)
The racial composition of Clark County includes 95.24% White, and smaller percentages for Black or African American, Native American, other race, Asian and multiracial populations.
Race | Population | Percentage (of total) |
|---|---|---|
| White | 14,540 | 95.24% |
| Two or more races | 539 | 3.53% |
| Black or African American | 70 | 0.46% |
| Native American | 57 | 0.37% |
| Other race | 41 | 0.27% |
| Asian | 19 | 0.12% |
Clark County's average per capita income is $48,590. Household income levels show a median of $72,927. The poverty rate stands at 9.15%.
Name | Median | Mean |
|---|---|---|
| Married Families | $102,896 | - |
| Families | $88,378 | $104,665 |
| Households | $72,927 | $87,731 |
| Non Families | $42,646 | $49,682 |
Average Income
Median Household Income
Poverty Rate
