Demographics & People — Caseyville, Illinois
Population Overview
| Population (Census) | 4,170 |
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| Estimated 2026 | ~4,000 |
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| Median Age | 42.1 |
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| Total Households | 1,498 |
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| Family Households | 909 |
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| Average Household Size | 2.71 |
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| Diversity Index | 0.4378 (moderately diverse) |
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Race & Ethnicity
| White | 3,056 |
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| Black or African American | 471 |
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| Asian | 0 |
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| Hispanic or Latino | 702 |
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Heritage & Ancestry
| Group | Count |
|---|
| Unclassified or not reported | 1,460 |
| Other groups | 962 |
| Irish | 568 |
| German | 531 |
| Hispanic: Hispanic or Latino | 477 |
| Hispanic: Mexican | 321 |
| French (except Basque) | 304 |
| English | 202 |
| American | 171 |
| Italian | 130 |
Language
| English Only | 3,719 |
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| Spanish | 265 |
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| Population 5+ | 4,022 |
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Veterans
| Veterans | 491 |
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| Population 18+ | 3,189 |
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Source: Census ACS 5-Year 2023; Census ACS 5-Year 2023, Table B01003; Census ACS 5-Year 2023, B19013. Data for Caseyville, Illinois.
