Will County's 2026 population is estimated at 718,983, reflecting a 0.73% growth rate over the past year (World Population Review estimate based on U.S. Census Bureau data). Will County is the 4th largest county in Illinois. The 2010 population was 678,829 and has grown 5.92% since 2010.
Data after 2023 is projected based on recent change
Overall: 39.1 years
Female: 39.8 years
Male: 38.3 years
There are 535,898 adults, (102,267 of whom are seniors) in Will County.
Female: 351,509 (50.1%)
Male: 349,953 (49.9%)
The racial composition of Will County includes 62.33% White, 11.84% Black or African American, 7.36% other race, 6.39% Asian, and smaller percentages for Native American, Native Hawaiian or Pacific Islander and multiracial populations.
| Race | Population ↓ | Percentage (of total) |
|---|---|---|
| White | 437,226 | 62.33% |
| Black or African American | 83,066 | 11.84% |
| Two or more races | 80,817 | 11.52% |
| Other race | 51,630 | 7.36% |
| Asian | 44,805 | 6.39% |
| Native American | 3,817 | 0.54% |
| Native Hawaiian or Pacific Islander | 101 | 0.01% |
Will County 's average per capita income is $61,606. Household income levels show a median of $109,984. The poverty rate stands at 7.33%.
| Name | Median ↓ | Mean |
|---|---|---|
| Married Families | $143,570 | $167,630 |
| Families | $127,796 | $150,669 |
| Households | $109,984 | $134,181 |
| Non Families | $59,495 | $77,087 |
Average Income
Median Household Income
Poverty Rate
