| Name | Lake County |
| State | Illinois |
| FIPS Code | 17097 |
| County Seat | Waukegan |
| Timezone | Central Daylight Time (CDT) |
| Population (2024) | 714,207 |
| Population Growth Rate(2020-2024) | -0.03% |
| Majority Ethnicity | White 61.28% |
| Public School Majority Ethnicity | White 44% |
| Partisan Voting Index | Democratic:+11 |
| Unemployment Rate (May 2026) | 6.2% |
| Sales Tax Rate (2025) | 7% |
| Area Code(s) | 224 / 847 / 815 / 779 |
| Race/Ethnicity | Percentage of Population (2023) |
|---|---|
| White | 61.28% |
| African American | 6.36% |
| Hispanic | 23.37% |
| Asian | 8.09% |
| Native American | 0.85% |
| Hawaiin/Pacific Islander | 0.05% |
| Race/Ethnicity | Percentage of Public School Students (2023) |
|---|---|
| White | 44.4% |
| African American | 6.91% |
| Hispanic | 33.69% |
| Asian | 10.29% |
| Native American | 0.38% |
| Hawaiin/Pacific Islander | 0.12% |