| Place Name | Lanark |
| Place Type | City |
| ZIP Code(s) | 61046 |
| County | Carroll County |
| Area Code(s) | 815,779 |
| Timezone | Central Standard Time (CST) |
| Population (2022) | 1,615 |
| Population Growth Rate (2010-19) | 3.23% |
| Majority Ethnicity | White 95.05% |
| US Congressional District(s) | Illinois 17th |
| State House Districts | 89 |
| State Senate Districts | 45 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 95.05% |
| African American | 1.52% |
| Hispanic | 0.19% |
| Asian | 0% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 3.24% |