Henry County's 2026 population is estimated at 47,807, reflecting a -0.39% growth rate over the past year (World Population Review estimate based on U.S. Census Bureau data). Henry County is the 30th largest county in Illinois. The 2010 population was 50,459 and has grown -5.26% since 2010.
Data after 2023 is projected based on recent change
Overall: 43.6 years
Female: 44.5 years
Male: 42.9 years
There are 38,127 adults, (10,591 of whom are seniors) in Henry County.
Female: 24,435 (50.2%)
Male: 24,208 (49.8%)
The racial composition of Henry County includes 87.95% White, and smaller percentages for other race, Black or African American, Asian, Native American, Native Hawaiian or Pacific Islander and multiracial populations.
| Race | Population ↓ | Percentage (of total) |
|---|---|---|
| White | 42,780 | 87.95% |
| Two or more races | 3,839 | 7.89% |
| Other race | 1,227 | 2.52% |
| Black or African American | 535 | 1.1% |
| Asian | 254 | 0.52% |
| Native American | 5 | 0.01% |
| Native Hawaiian or Pacific Islander | 3 | 0.01% |
Henry County 's average per capita income is $50,204. Household income levels show a median of $71,911. The poverty rate stands at 8.91%.
| Name | Median ↓ | Mean |
|---|---|---|
| Married Families | $106,769 | - |
| Families | $89,840 | $111,504 |
| Households | $71,911 | $93,368 |
| Non Families | $42,907 | $53,734 |
Average Income
Median Household Income
Poverty Rate
