Demographics & People — Mendon, Illinois
Population Overview
| Population (Census) | 1,131 |
|---|
| Estimated 2026 | ~1,300 |
|---|
| Median Age | 37.6 |
|---|
| Total Households | 404 |
|---|
| Family Households | 275 |
|---|
| Average Household Size | 2.68 |
|---|
| Diversity Index | 0.0212 (relatively homogeneous) |
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Race & Ethnicity
| White | 1,108 |
|---|
| Black or African American | 0 |
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| Asian | 0 |
|---|
| Hispanic or Latino | 12 |
|---|
Heritage & Ancestry
| Group | Count |
|---|
| Unclassified or not reported | 651 |
| German | 287 |
| Irish | 114 |
| English | 82 |
| American | 49 |
| Other groups | 33 |
| Italian | 27 |
| Norwegian | 17 |
| Scottish | 12 |
| French (except Basque) | 11 |
Language
| English Only | 1,085 |
|---|
| Spanish | 0 |
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| Population 5+ | 1,085 |
|---|
Veterans
| Veterans | 75 |
|---|
| Population 18+ | 780 |
|---|
Source: Census ACS 5-Year 2023; Census ACS 5-Year 2023, Table B01003; Census ACS 5-Year 2023, B19013. Data for Mendon, Illinois.
