Lake County's estimated 2026 population is 720,188 with a growth rate of 0.12% in the past year according to the most recent United States census data. Lake County is the 3rd largest county in Illinois. The 2010 population was 704,179 and has seen a growth of 2.27% since that time.
Data after 2023 is projected based on recent change
Overall: 39.1 years
Female: 40.3 years
Male: 37.9 years
There are 547,917 adults, (112,792 of whom are seniors) in Lake County.
Female: 354,995 (49.7%)
Male: 359,228 (50.3%)
The racial composition of Lake County includes 61.23% White, 9.08% other race, 8.7% Asian, 6.67% Black or African American, and smaller percentages for Native American, Native Hawaiian or Pacific Islander and multiracial populations.
Race | Population | Percentage (of total) |
|---|---|---|
| White | 437,310 | 61.23% |
| Two or more races | 94,994 | 13.3% |
| Other race | 64,867 | 9.08% |
| Asian | 62,162 | 8.7% |
| Black or African American | 47,642 | 6.67% |
| Native American | 6,816 | 0.95% |
| Native Hawaiian or Pacific Islander | 432 | 0.06% |
Lake County's average per capita income is $64,173. Household income levels show a median of $110,416. The poverty rate stands at 8.34%.
Name | Median | Mean |
|---|---|---|
| Married Families | $156,173 | $207,028 |
| Families | $135,361 | $182,727 |
| Households | $110,416 | $155,726 |
| Non Families | $57,372 | $82,041 |
Average Income
Median Household Income
Poverty Rate
