Demographics & People — Plainfield, Illinois
Population Overview
| Population (Census) | 45,705 |
| Estimated 2026 | ~49,100 |
| Median Age | 37.5 |
| Total Households | 14,205 |
| Family Households | 11,828 |
| Average Household Size | 3.2 |
| Diversity Index | 0.4574 (moderately diverse) |
Race & Ethnicity
| White | 33,033 |
| Black or African American | 4,131 |
| Asian | 4,267 |
| Hispanic or Latino | 4,548 |
Heritage & Ancestry
| Group | Count |
| German | 10,728 |
| Other groups | 10,369 |
| Unclassified or not reported | 7,446 |
| Irish | 7,198 |
| Polish | 5,309 |
| Italian | 4,914 |
| Hispanic: Hispanic or Latino | 3,727 |
| English | 3,621 |
| Hispanic: Mexican | 2,252 |
| Subsaharan African | 1,497 |
Language
| English Only | 35,282 |
| Spanish | 2,531 |
| Population 5+ | 43,038 |
Veterans
| Veterans | 1,483 |
| Population 18+ | 32,020 |
Commuting
| Mean Commute Time | 33.3 minutes |
| Work from Home | 23.3% |
| 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 Plainfield, Illinois.