Demographics & People — Allendale, Illinois
Population Overview
| Population (Census) | 491 |
|---|
| Estimated 2026 | ~500 |
|---|
| Median Age | 44.1 |
|---|
| Total Households | 182 |
|---|
| Family Households | 145 |
|---|
| Average Household Size | 2.7 |
|---|
| Diversity Index | 0.0642 (relatively homogeneous) |
|---|
Race & Ethnicity
| White | 469 |
|---|
| Black or African American | 0 |
|---|
| Asian | 12 |
|---|
| Hispanic or Latino | 4 |
|---|
Heritage & Ancestry
| Group | Count |
|---|
| Unclassified or not reported | 253 |
| Other groups | 82 |
| German | 78 |
| English | 68 |
| Irish | 50 |
| Scotch-Irish | 21 |
| Scottish | 15 |
| American | 14 |
| Hispanic: Hispanic or Latino | 12 |
| Hispanic: Mexican | 11 |
Language
| English Only | 469 |
|---|
| Spanish | 0 |
|---|
| Population 5+ | 478 |
|---|
Veterans
| Veterans | 14 |
|---|
| Population 18+ | 402 |
|---|
Source: Census ACS 5-Year 2023; Census ACS 5-Year 2023, Table B01003; Census ACS 5-Year 2023, B19013. Data for Allendale, Illinois.
