Demographics & People — Peru, Illinois
Population Overview
| Population (Census) | 9,863 |
| Estimated 2026 | ~9,600 |
| Median Age | 45.7 |
| Total Households | 4,379 |
| Family Households | 2,778 |
| Average Household Size | 2.21 |
| Diversity Index | 0.221 (somewhat diverse) |
Race & Ethnicity
| White | 8,720 |
| Black or African American | 97 |
| Asian | 149 |
| Hispanic or Latino | 978 |
Heritage & Ancestry
| Group | Count |
| German | 2,735 |
| Unclassified or not reported | 2,201 |
| Irish | 1,585 |
| Italian | 1,430 |
| Polish | 1,418 |
| Other groups | 1,212 |
| English | 1,168 |
| Hispanic: Hispanic or Latino | 636 |
| Hispanic: Mexican | 520 |
| Swedish | 350 |
Language
| English Only | 8,568 |
| Spanish | 431 |
| Population 5+ | 9,315 |
Veterans
| Veterans | 456 |
| Population 18+ | 7,733 |
Commuting
| Mean Commute Time | 18.8 minutes |
| Work from Home | 5.4% |
| 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 Peru, Illinois.