Demographics & People — Colchester, Illinois
Population Overview
| Population (Census) | 1,057 |
|---|
| Estimated 2026 | ~1,300 |
|---|
| Median Age | 41.6 |
|---|
| Total Households | 500 |
|---|
| Family Households | 299 |
|---|
| Average Household Size | 2.11 |
|---|
| Diversity Index | 0.0578 (relatively homogeneous) |
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Race & Ethnicity
| White | 1,043 |
|---|
| Black or African American | 0 |
|---|
| Asian | 0 |
|---|
| Hispanic or Latino | 32 |
|---|
Heritage & Ancestry
| Group | Count |
|---|
| Unclassified or not reported | 387 |
| German | 295 |
| English | 285 |
| Irish | 89 |
| Other groups | 64 |
| Dutch | 48 |
| American | 41 |
| Scottish | 37 |
| Norwegian | 33 |
| Polish | 28 |
Language
| English Only | 1,043 |
|---|
| Spanish | 5 |
|---|
| Population 5+ | 1,048 |
|---|
Veterans
| Veterans | 101 |
|---|
| Population 18+ | 914 |
|---|
Source: Census ACS 5-Year 2023; Census ACS 5-Year 2023, Table B01003; Census ACS 5-Year 2023, B19013. Data for Colchester, Illinois.
