Demographics & People — DeKalb, Illinois
Population Overview
| Population (Census) | 40,464 |
| Estimated 2026 | ~40,400 |
| Median Age | 26.1 |
| Total Households | 16,015 |
| Family Households | 7,835 |
| Average Household Size | 2.28 |
| Diversity Index | 0.5503 (moderately diverse) |
Race & Ethnicity
| White | 25,328 |
| Black or African American | 6,149 |
| Asian | 1,578 |
| Hispanic or Latino | 7,426 |
Heritage & Ancestry
| Group | Count |
| Other groups | 12,289 |
| Unclassified or not reported | 8,394 |
| German | 8,228 |
| Irish | 6,957 |
| Hispanic: Hispanic or Latino | 6,559 |
| Hispanic: Mexican | 5,088 |
| English | 2,793 |
| Italian | 2,513 |
| Polish | 1,956 |
| Swedish | 1,375 |
Language
| English Only | 31,445 |
| Spanish | 4,140 |
| Population 5+ | 38,447 |
Veterans
| Veterans | 1,661 |
| Population 18+ | 33,093 |
Commuting
| Mean Commute Time | 23.8 minutes |
| Work from Home | 6.3% |
| 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 DeKalb, Illinois.