Demographics & People — Leland Grove, Illinois
Population Overview
| Population (Census) | 1,595 |
| Estimated 2026 | ~1,300 |
| Median Age | 47.5 |
| Total Households | 734 |
| Family Households | 456 |
| Average Household Size | 2.16 |
| Diversity Index | 0.0846 (relatively homogeneous) |
Race & Ethnicity
| White | 1,515 |
| Black or African American | 22 |
| Asian | 26 |
| Hispanic or Latino | 21 |
Heritage & Ancestry
| Group | Count |
| German | 446 |
| Irish | 336 |
| English | 319 |
| Unclassified or not reported | 234 |
| Other groups | 195 |
| Italian | 110 |
| Scottish | 72 |
| French (except Basque) | 71 |
| Czech | 52 |
| Swedish | 43 |
Language
| English Only | 1,505 |
| Spanish | 22 |
| Population 5+ | 1,543 |
Veterans
| Veterans | 91 |
| Population 18+ | 1,217 |
Source: Census ACS 5-Year 2023; Census ACS 5-Year 2023, Table B01003; Census ACS 5-Year 2023, B19013. Data for Leland Grove, Illinois.