| Place Name | Alum Rock |
| Place Type | Census Designated Place |
| ZIP Code(s) | 95127 |
| County | Santa Clara County |
| Area Code(s) | 408,669 |
| Timezone | Pacific Daylight Time (PDT) |
| Population (2022) | 11,796 |
| Population Growth Rate (2010-19) | -22.49% |
| Majority Ethnicity | Hispanic 0.35% |
| Metro/Micro Stats Area | San Jose-Sunnyvale-Santa Clara, CA |
| US Congressional District(s) | California 19th |
| State Assembly Districts | 27 |
| State Senate Districts | 15 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 25.03% |
| African American | 0.64% |
| Hispanic | 0.35% |
| Asian | 14.79% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 59.19% |