Union County's estimated 2026 population is 16,480 with a growth rate of -1.06% in the past year according to the most recent United States census data. Union County is the 63rd largest county in Illinois. The 2010 population was 17,729 and has seen a growth of -7.04% since that time.
Data after 2023 is projected based on recent change
Overall: 44.3 years
Female: 44.9 years
Male: 43.5 years
There are 13,380 adults, (3,899 of whom are seniors) in Union County.
Female: 8,346 (49.1%)
Male: 8,651 (50.9%)
The racial composition of Union County includes 89.49% White, and smaller percentages for Black or African American, Asian, other race, Native American, Native Hawaiian or Pacific Islander and multiracial populations.
Race | Population | Percentage (of total) |
|---|---|---|
| White | 15,210 | 89.49% |
| Two or more races | 1,437 | 8.45% |
| Black or African American | 161 | 0.95% |
| Asian | 108 | 0.64% |
| Other race | 43 | 0.25% |
| Native American | 23 | 0.14% |
| Native Hawaiian or Pacific Islander | 15 | 0.09% |
Union County's average per capita income is $45,356. Household income levels show a median of $55,728. The poverty rate stands at 20.22%.
Name | Median | Mean |
|---|---|---|
| Married Families | $92,809 | - |
| Families | $84,901 | $95,447 |
| Households | $55,728 | $75,826 |
| Non Families | $28,408 | $42,707 |
Average Income
Median Household Income
Poverty Rate
