Demographics & People — Lanark, Illinois
Population Overview
| Population (Census) | 1,510 |
| Estimated 2026 | ~1,600 |
| Median Age | 38.4 |
| Total Households | 642 |
| Family Households | 434 |
| Average Household Size | 2.33 |
| Diversity Index | 0.1022 (relatively homogeneous) |
Race & Ethnicity
| White | 1,431 |
| Black or African American | 13 |
| Asian | 0 |
| Hispanic or Latino | 68 |
Heritage & Ancestry
| Group | Count |
| German | 561 |
| Unclassified or not reported | 381 |
| English | 189 |
| Other groups | 133 |
| American | 130 |
| Irish | 119 |
| Italian | 49 |
| Dutch | 46 |
| Hispanic: Hispanic or Latino | 43 |
| Swedish | 37 |
Language
| English Only | 1,388 |
| Spanish | 0 |
| Population 5+ | 1,401 |
Veterans
| Veterans | 67 |
| Population 18+ | 1,168 |
Commuting
| Mean Commute Time | 24.9 minutes |
| Work from Home | 3.6% |
| Commuter Profile | N/A |
Source: Census ACS 5-Year 2023; Census ACS 5-Year 2023, Table B01003; Census ACS 5-Year 2023, B19013. Data for Lanark, Illinois.