Carroll County's 2026 population is estimated at 15,348, reflecting a -0.31% growth rate over the past year (World Population Review estimate based on U.S. Census Bureau data). Carroll County is the 67th largest county in Illinois. The 2010 population was 15,395 and has grown -0.31% since 2010.
Data after 2023 is projected based on recent change
Overall: 45.4 years
Female: 49 years
Male: 43.6 years
There are 12,817 adults, (3,768 of whom are seniors) in Carroll County.
Female: 7,020 (45.1%)
Male: 8,556 (54.9%)
The racial composition of Carroll County includes 90.06% White, 4.03% Black or African American, and smaller percentages for other race, Asian, Native American and multiracial populations.
| Race | Population ↓ | Percentage (of total) |
|---|---|---|
| White | 14,027 | 90.06% |
| Black or African American | 628 | 4.03% |
| Two or more races | 526 | 3.38% |
| Other race | 226 | 1.45% |
| Asian | 125 | 0.8% |
| Native American | 44 | 0.28% |
Carroll County 's average per capita income is $44,129. Household income levels show a median of $60,758. The poverty rate stands at 14.2%.
| Name | Median ↓ | Mean |
|---|---|---|
| Married Families | $94,604 | - |
| Families | $78,644 | $95,822 |
| Households | $60,758 | $77,693 |
| Non Families | $37,590 | $49,677 |
Average Income
Median Household Income
Poverty Rate