Randolph County's 2026 population is estimated at 29,723, reflecting a -0.3% growth rate over the past year (World Population Review estimate based on U.S. Census Bureau data). Randolph County is the 47th largest county in Illinois. The 2010 population was 33,410 and has grown -11.04% since 2010.
Data after 2023 is projected based on recent change
Overall: 43.7 years
Female: 45.6 years
Male: 42.7 years
There are 23,995 adults, (6,393 of whom are seniors) in Randolph County.
Female: 13,869 (46.1%)
Male: 16,189 (53.9%)
The racial composition of Randolph County includes 85.79% White, 8.31% Black or African American, and smaller percentages for other race, Native American, Asian, Native Hawaiian or Pacific Islander and multiracial populations.
| Race | Population ↓ | Percentage (of total) |
|---|---|---|
| White | 25,786 | 85.79% |
| Black or African American | 2,497 | 8.31% |
| Two or more races | 918 | 3.05% |
| Other race | 475 | 1.58% |
| Native American | 191 | 0.64% |
| Asian | 169 | 0.56% |
| Native Hawaiian or Pacific Islander | 22 | 0.07% |
Randolph County 's average per capita income is $48,588. Household income levels show a median of $68,131. The poverty rate stands at 14.63%.
| Name | Median ↓ | Mean |
|---|---|---|
| Married Families | $102,426 | $114,089 |
| Families | $89,005 | $98,035 |
| Households | $68,131 | $82,525 |
| Non Families | $37,517 | $49,627 |
Average Income
Median Household Income
Poverty Rate
