Alum Rock, California Demographics & Population 2026
During the 2020–2024 ACS period, Alum Rock, California had a total population of 10,440, the 488th largest community in California, with a median household income of $126,705, which is 28% higher than the state average. The poverty rate is 6.2%.
Data vintage: U.S. Census Bureau ACS 2020–2024 5-Year Estimates · refreshed July 2026 · Methodology & source notes
Key Takeaways
- Housing affordability is a challenge — homes cost 7.2x the median household income.
Alum Rock Quick Facts
How Alum Rock Changed
Change from the 2019–2023 ACS period to 2020–2024. These are rolling five-year estimates, not year-over-year measurements.
| Metric | 2019–2023 | 2020–2024 | Change |
|---|---|---|---|
| Population | 11,619 | 10,440 | -10.1% |
| Median household income | $111,976 | $126,705 | +13.2% |
| Median home value | $880,000 | $909,500 | +3.4% |
How Alum Rock Compares
Median Household Income
Median Home Value
Economy & Housing
Household Income Distribution
Detailed income brackets
Employment
Housing Overview
People & Demographics
Age Distribution
Race & Ethnicity
Diversity Index
Moderate diversity with one or two groups making up the majority.
State average: 70 | National average: 61
Education
Educational Attainment (Adults 25+)
Alum Rock Rankings in California
Explore California Rankings
Other Cities in Santa Clara County
| City | Population | Median Income | Poverty | Home Value |
|---|---|---|---|---|
| San Jose | 990,138 | $146,427 | 8.1% | $1,233,200 |
| Sunnyvale | 154,236 | $186,170 | 5.8% | $1,801,800 |
| Santa Clara | 130,256 | $178,958 | 8.4% | $1,582,600 |
| Mountain View | 83,732 | $189,917 | 6.0% | $1,927,000 |
| Milpitas | 78,578 | $178,798 | 5.9% | $1,251,700 |
| Palo Alto | 67,237 | $231,101 | 6.0% | $2,000,000+ |
| Gilroy | 59,004 | $133,107 | 6.7% | $1,027,400 |
| Cupertino | 58,566 | $234,707 | 4.1% | $2,000,000+ |
| Morgan Hill | 45,425 | $163,920 | 4.1% | $1,210,200 |
| Campbell | 42,781 | $145,268 | 5.6% | $1,617,000 |
Cities Similar to Alum Rock
These cities in the same state have comparable population and economic profiles.
| City | Population | Median Income | Home Value | Bachelor's+ | Poverty |
|---|---|---|---|---|---|
| Soquel | 10,679 | $118,777 | $957,300 | 48.0% | 9.7% |
| Canyon Lake | 11,119 | $126,926 | $699,600 | 30.7% | 7.3% |
| Valley Center | 11,119 | $132,361 | $883,700 | 38.4% | 6.7% |
| View Park-Windsor Hills | 11,230 | $130,504 | $1,141,500 | 62.9% | 7.1% |
| San Diego Country Estates | 10,223 | $145,479 | $810,300 | 33.3% | 2.6% |
Population Overview
Alum Rock is a small city located in California, within Santa Clara County. The total population is 10,440. It ranks as the 488th most populous out of 1,570 Census-designated places in California.
Age Demographics
The median age in Alum Rock is 41.0 years. This is 8% higher than the state median of 37.9 years.
Economy, Income & Housing
The median household income in Alum Rock is $126,705. This is 28% higher than the state median of $99,122. It is also 57% higher than the national median of $80,734. The poverty rate stands at 6.2%. This is 49% lower than the state poverty rate of 12.0%. The unemployment rate is 4.5%. This is 32% lower than the state rate of 6.6%. The median home value is $909,500. Housing costs are 24% higher than the state median of $734,700. The home-value-to-income ratio of 7.2x suggests that housing affordability is a significant concern for many residents. 70.2% of occupied housing units are owner-occupied. This homeownership rate is 26% higher than the state average of 55.9%.
Race & Ethnicity
The largest racial or ethnic group in Alum Rock is Hispanic or Latino, making up 63.6% of the population. Asian residents account for 21.1%. The White (non-Hispanic) population (11.9%) is well below the state average of 33.8%. The Black or African American population (0.3%) is well below the state average of 5.2%. The Hispanic or Latino population is significantly higher than the state average (63.6% vs 40.2%).
Education
24.7% of residents aged 25 and older hold a bachelor's degree or higher. This is 33% lower than the state rate of 37.1%. Nationally, 35.7% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 68.8%.
Data Sources & Methodology
All demographic data for Alum Rock, California is sourced from the U.S. Census Bureau's American Community Survey (ACS) 2020–2024 5-Year Estimates. The ACS collects data from approximately 3.5 million households annually and pools five years of responses so that even small communities can be measured, though the margin of error widens as the population falls. Comparisons are made against California state averages and national averages calculated from the same dataset. Rankings reflect the city's position among all 1,570 Census-designated places in California. Read more about how these figures are produced on our methodology page, or visit data.census.gov for official data.
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Frequently Asked Questions
What is the population of Alum Rock, California?
Alum Rock, California has a population of 10,440 according to the most recent U.S. Census ACS 5-Year Estimates.
What is the median household income in Alum Rock, CA?
The median household income in Alum Rock is $126,705, which is 57% higher than the national median of $80,734.
What is the poverty rate in Alum Rock, CA?
The poverty rate in Alum Rock is 6.2%. This means approximately 629 residents live below the federal poverty line.
What is the racial makeup of Alum Rock, California?
Alum Rock's population is 11.9% White, 0.3% Black, 63.6% Hispanic/Latino, and 21.1% Asian.
What is the median home value in Alum Rock, CA?
The median home value in Alum Rock is $909,500. The home-value-to-income ratio is 7.2x.
How educated is Alum Rock, California?
24.7% of adults (25+) in Alum Rock hold a bachelor's degree or higher, and 8.3% hold a graduate or professional degree.