Demographics & People — Castaic, California
Population Overview
| Population (Census) | 18,479 |
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| Estimated 2026 | ~16,900 |
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| Median Age | 37.9 |
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| Total Households | 5,816 |
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| Family Households | 4,901 |
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| Average Household Size | 3.18 |
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| Diversity Index | 0.5912 (moderately diverse) |
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Race & Ethnicity
| White | 10,107 |
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| Black or African American | 275 |
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| Asian | 2,201 |
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| Hispanic or Latino | 6,689 |
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Heritage & Ancestry
| Group | Count |
|---|
| Other groups | 8,619 |
| Hispanic: Hispanic or Latino | 6,457 |
| Hispanic: Mexican | 4,310 |
| Unclassified or not reported | 2,816 |
| German | 1,876 |
| English | 1,576 |
| Hispanic: Central American | 1,300 |
| Irish | 1,167 |
| Hispanic: Salvadoran | 906 |
| European | 900 |
Language
| English Only | 11,717 |
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| Spanish | 3,383 |
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| Population 5+ | 17,223 |
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Veterans
| Veterans | 507 |
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| Population 18+ | 13,566 |
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Commuting
| Mean Commute Time | 31.0 minutes |
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| Work from Home | 16.2% |
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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 Castaic, California.
