Demographics & People — Diamond Bar, California
Population Overview
| Population (Census) | 53,750 |
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| Estimated 2026 | ~52,500 |
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| Median Age | 45.7 |
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| Total Households | 18,238 |
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| Family Households | 14,558 |
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| Average Household Size | 2.93 |
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| Diversity Index | 0.5501 (moderately diverse) |
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Race & Ethnicity
| White | 9,342 |
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| Black or African American | 1,639 |
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| Asian | 33,352 |
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| Hispanic or Latino | 9,123 |
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Heritage & Ancestry
| Group | Count |
|---|
| Other groups | 39,123 |
| Hispanic: Hispanic or Latino | 10,352 |
| Unclassified or not reported | 9,107 |
| Hispanic: Mexican | 7,365 |
| German | 1,950 |
| English | 1,430 |
| Irish | 1,225 |
| Hispanic: Other Hispanic or Latino | 989 |
| Hispanic: Central American | 924 |
| American | 900 |
Language
| English Only | 19,724 |
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| Spanish | 4,358 |
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| Population 5+ | 51,519 |
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Veterans
| Veterans | 1,337 |
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| Population 18+ | 43,893 |
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Commuting
| Mean Commute Time | 33.3 minutes |
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| Work from Home | 18.4% |
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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 Diamond Bar, California.
