Demographics & People — Collinsville, Connecticut
Population Overview
| Population (Census) | 4,001 |
|---|
| Estimated 2026 | ~3,900 |
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| Median Age | 49.4 |
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| Total Households | 1,698 |
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| Family Households | 929 |
|---|
| Average Household Size | 2.3 |
|---|
| Diversity Index | 0.0742 (relatively homogeneous) |
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Race & Ethnicity
| White | 3,526 |
|---|
| Black or African American | 77 |
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| Asian | 0 |
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| Hispanic or Latino | 63 |
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Heritage & Ancestry
| Group | Count |
|---|
| Italian | 780 |
| Unclassified or not reported | 747 |
| Irish | 674 |
| English | 671 |
| Other groups | 441 |
| German | 303 |
| French (except Basque) | 274 |
| Scottish | 195 |
| Polish | 182 |
| British | 152 |
Language
| English Only | 3,665 |
|---|
| Spanish | 33 |
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| Population 5+ | 3,800 |
|---|
Veterans
| Veterans | 200 |
|---|
| Population 18+ | 2,905 |
|---|
Source: Census ACS 5-Year 2023; Census ACS 5-Year 2023, Table B01003; Census ACS 5-Year 2023, B19013. Data for Collinsville, Connecticut.
