Demographics & People — Westville, Illinois
Population Overview
| Population (Census) | 3,442 |
| Estimated 2026 | ~3,400 |
| Median Age | 38.4 |
| Total Households | 1,497 |
| Family Households | 790 |
| Average Household Size | 2.3 |
| Diversity Index | 0.0464 (relatively homogeneous) |
Race & Ethnicity
| White | 3,308 |
| Black or African American | 17 |
| Asian | 16 |
| Hispanic or Latino | 47 |
Heritage & Ancestry
| Group | Count |
| Unclassified or not reported | 1,748 |
| German | 591 |
| Other groups | 400 |
| English | 241 |
| Irish | 182 |
| American | 141 |
| Italian | 135 |
| Polish | 91 |
| French (except Basque) | 82 |
| Lithuanian | 66 |
Language
| English Only | 2,989 |
| Spanish | 67 |
| Population 5+ | 3,072 |
Veterans
| Veterans | 133 |
| Population 18+ | 2,508 |
Source: Census ACS 5-Year 2023; Census ACS 5-Year 2023, Table B01003; Census ACS 5-Year 2023, B19013. Data for Westville, Illinois.