Demographics & People — Grayslake, Illinois
Population Overview
| Population (Census) | 20,707 |
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| Estimated 2026 | ~21,500 |
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| Median Age | 37.2 |
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| Total Households | 7,939 |
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| Family Households | 5,414 |
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| Average Household Size | 2.59 |
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| Diversity Index | 0.4088 (moderately diverse) |
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Race & Ethnicity
| White | 15,678 |
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| Black or African American | 1,773 |
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| Asian | 811 |
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| Hispanic or Latino | 2,551 |
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Heritage & Ancestry
| Group | Count |
|---|
| Other groups | 5,077 |
| German | 4,934 |
| Irish | 3,392 |
| Unclassified or not reported | 3,112 |
| Hispanic: Hispanic or Latino | 2,201 |
| Polish | 1,834 |
| English | 1,638 |
| Hispanic: Mexican | 1,561 |
| Italian | 1,402 |
| Swedish | 818 |
Language
| English Only | 16,450 |
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| Spanish | 1,403 |
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| Population 5+ | 19,313 |
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Veterans
| Veterans | 934 |
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| Population 18+ | 15,720 |
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Commuting
| Mean Commute Time | 27.2 minutes |
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| Work from Home | 19.9% |
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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 Grayslake, Illinois.
