Demographics & People — Marquette Heights, Illinois
Population Overview
| Population (Census) | 2,613 |
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| Estimated 2026 | ~2,200 |
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| Median Age | 37.7 |
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| Total Households | 1,131 |
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| Family Households | 716 |
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| Average Household Size | 2.31 |
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| Diversity Index | 0.1119 (relatively homogeneous) |
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Race & Ethnicity
| White | 2,453 |
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| Black or African American | 2 |
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| Asian | 0 |
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| Hispanic or Latino | 153 |
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Heritage & Ancestry
| Group | Count |
|---|
| Unclassified or not reported | 1,006 |
| German | 577 |
| Irish | 308 |
| Other groups | 303 |
| English | 291 |
| American | 216 |
| Dutch | 139 |
| Hispanic: Hispanic or Latino | 139 |
| Hispanic: Puerto Rican | 111 |
| Italian | 78 |
Language
| English Only | 2,392 |
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| Spanish | 32 |
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| Population 5+ | 2,445 |
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Veterans
| Veterans | 198 |
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| Population 18+ | 2,121 |
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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 Marquette Heights, Illinois.
