Demographics & People — Diablo, California
Population Overview
| Population (Census) | 1,072 |
|---|
| Estimated 2026 | ~1,700 |
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| Median Age | 43.3 |
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| Total Households | 385 |
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| Family Households | 346 |
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| Average Household Size | 2.78 |
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| Diversity Index | 0.2099 (somewhat diverse) |
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Race & Ethnicity
| White | 928 |
|---|
| Black or African American | 0 |
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| Asian | 17 |
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| Hispanic or Latino | 106 |
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Heritage & Ancestry
| Group | Count |
|---|
| German | 340 |
| Italian | 299 |
| Other groups | 141 |
| Hispanic: Hispanic or Latino | 124 |
| Hispanic: Dominican (Dominican Republic) | 124 |
| English | 100 |
| Arab | 88 |
| Lebanese | 88 |
| Polish | 67 |
| Irish | 60 |
Language
| English Only | 795 |
|---|
| Spanish | 106 |
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| Population 5+ | 995 |
|---|
Veterans
| Veterans | 56 |
|---|
| Population 18+ | 535 |
|---|
Source: Census ACS 5-Year 2023; Census ACS 5-Year 2023, Table B01003; Census ACS 5-Year 2023, B19013 (county fallback). Data for Diablo, California.
