Demographics & People — Vandalia, Illinois
Population Overview
| Population (Census) | 6,041 |
| Estimated 2026 | ~5,300 |
| Median Age | 43.9 |
| Total Households | 2,073 |
| Family Households | 1,059 |
| Average Household Size | 2.41 |
| Diversity Index | 0.3073 (somewhat diverse) |
Race & Ethnicity
| White | 4,814 |
| Black or African American | 688 |
| Asian | 4 |
| Hispanic or Latino | 352 |
Heritage & Ancestry
| Group | Count |
| Unclassified or not reported | 1,849 |
| Other groups | 1,583 |
| German | 1,189 |
| American | 772 |
| English | 501 |
| Hispanic: Hispanic or Latino | 394 |
| Hispanic: Mexican | 350 |
| Irish | 190 |
| Swedish | 169 |
| Italian | 154 |
Language
| English Only | 5,364 |
| Spanish | 350 |
| Population 5+ | 5,791 |
Veterans
| Veterans | 310 |
| Population 18+ | 5,179 |
Commuting
| Mean Commute Time | 19.1 minutes |
| Work from Home | 7.6% |
| 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 Vandalia, Illinois.