Demographics & People — McHenry, Illinois
Population Overview
| Population (Census) | 27,774 |
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| Estimated 2026 | ~28,800 |
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| Median Age | 43.9 |
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| Total Households | 11,547 |
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| Family Households | 7,213 |
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| Average Household Size | 2.38 |
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| Diversity Index | 0.3139 (somewhat diverse) |
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Race & Ethnicity
| White | 23,466 |
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| Black or African American | 208 |
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| Asian | 496 |
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| Hispanic or Latino | 4,738 |
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Heritage & Ancestry
| Group | Count |
|---|
| German | 7,999 |
| Unclassified or not reported | 5,582 |
| Other groups | 5,127 |
| Irish | 4,714 |
| Hispanic: Hispanic or Latino | 4,453 |
| Hispanic: Mexican | 3,680 |
| Polish | 3,186 |
| Italian | 2,676 |
| English | 2,366 |
| American | 1,119 |
Language
| English Only | 22,331 |
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| Spanish | 2,805 |
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| Population 5+ | 26,515 |
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Veterans
| Veterans | 1,341 |
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| Population 18+ | 21,949 |
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Commuting
| Mean Commute Time | 29.0 minutes |
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| Work from Home | 14.1% |
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| Commuter Profile | N/A |
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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 McHenry, Illinois.
