| Place Name | Knollwood |
| Place Type | Census Designated Place |
| ZIP Code(s) | 60044 60045 |
| County | Lake County |
| Area Code(s) | 224,847 |
| Timezone | Central Daylight Time (CDT) |
| Population (2022) | 1,345 |
| Population Growth Rate (2010-19) | 21.41% |
| Majority Ethnicity | White 85.05% |
| Metro/Micro Stats Area | Chicago-Naperville-Elgin, IL-IN-WI |
| US Congressional District(s) | Illinois 10th |
| State House Districts | 58 |
| State Senate Districts | 29 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 85.05% |
| African American | 0.41% |
| Hispanic | 0% |
| Asian | 1.13% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 13.4% |