Demographics & People — Posen, Illinois
Population Overview
| Population (Census) | 5,331 |
| Estimated 2026 | ~5,200 |
| Median Age | 33.1 |
| Total Households | 1,636 |
| Family Households | 1,191 |
| Average Household Size | 3.26 |
| Diversity Index | 0.5926 (moderately diverse) |
Race & Ethnicity
| White | 1,746 |
| Black or African American | 973 |
| Asian | 14 |
| Hispanic or Latino | 3,266 |
Heritage & Ancestry
| Group | Count |
| Hispanic: Hispanic or Latino | 3,790 |
| Hispanic: Mexican | 3,657 |
| Other groups | 3,518 |
| Unclassified or not reported | 1,079 |
| Irish | 305 |
| Polish | 301 |
| German | 290 |
| Hispanic: Colombian | 116 |
| Hispanic: South American | 116 |
| Subsaharan African | 98 |
Language
| English Only | 2,462 |
| Spanish | 2,526 |
| Population 5+ | 5,058 |
Veterans
| Veterans | 172 |
| Population 18+ | 4,085 |
Commuting
| Mean Commute Time | 24.3 minutes |
| Work from Home | 1.9% |
| 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 Posen, Illinois.