Tazewell County's 2026 population is estimated at 129,793, reflecting a -0.01% growth rate over the past year (World Population Review estimate based on U.S. Census Bureau data). Tazewell County is the 16th largest county in Illinois. The 2010 population was 135,487 and has grown -4.2% since 2010.
Data after 2023 is projected based on recent change
Overall: 41.9 years
Female: 43 years
Male: 41.1 years
There are 101,706 adults, (25,882 of whom are seniors) in Tazewell County.
Female: 65,669 (50.4%)
Male: 64,621 (49.6%)
The racial composition of Tazewell County includes 93.13% 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 | 121,337 | 93.13% |
| Two or more races | 4,715 | 3.62% |
| Black or African American | 2,101 | 1.61% |
| Asian | 1,283 | 0.98% |
| Other race | 650 | 0.5% |
| Native American | 171 | 0.13% |
| Native Hawaiian or Pacific Islander | 33 | 0.03% |
Tazewell County 's average per capita income is $51,352. Household income levels show a median of $77,982. The poverty rate stands at 9.02%.
| Name | Median ↓ | Mean |
|---|---|---|
| Married Families | $113,991 | $132,434 |
| Families | $100,755 | $119,451 |
| Households | $77,982 | $97,832 |
| Non Families | $45,650 | $59,163 |
Average Income
Median Household Income
Poverty Rate
