Alum Rock, California Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates
The population of Alum Rock, California is 11,619 as of the 2023 American Community Survey, making it the 457th-largest city in California. The median household income is $111,976, the median home value is $880,000, and the median age is 40.3.
11,619
Population
13371
People / sq mi
$111,976
Median Income
$880,000
Median Home Value
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Alum Rock covers 0.9 sq mi of land at 13371 people per square mile.
About Alum Rock, CA
Alum Rock stands apart on settlement density — it is among the most densely settled of US cities, at roughly 13,371 people per square mile. With 11,619 residents, Alum Rock is a city in California.
Median household income is $111,976, above the US median of $78,538. Poverty runs at 5.1%, below the national 12.4%. Home prices are steep, with the typical property valued at $880,000, with typical rent around $2,412.
Degree attainment is on the lower side for US cities: 19.8% of adults hold a bachelor’s degree, below the national 35.0%. Most workers commute: only 6.1% work from home, below the national 14.0%, and the average commute runs about 30 minutes each way.
That density explains much of the rest of the profile in Alum Rock: denser places lean toward renting, shorter commutes by transit, and a younger working-age mix.
Race & Ethnicity
| White | 19.5% |
| Black or African American | 0.4% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 1.7% |
| Two or More Races | 0.0% |
Economy & Income
$111,976
Median Household Income
$34,255
Per Capita Income
5.1%
Poverty Rate
3.1%
Unemployment Rate
Housing
$880,000
Median Home Value
$2,412
Median Rent
70.4%
Owner-Occupied
Education
66.8%
High School+
19.8%
Bachelor's+
Commute
0.4%
Drive Alone
79.2%
Public Transit
6.1%
Work From Home
29.6 min
Avg Commute
Community Profile
5.9%
Foreign Born
27.3%
Non-English at Home
2.9%
Veterans
10.1%
With Disability
92.1%
Health Insurance
96.2%
Internet Access
Employment by Industry
| Construction | 16.5% |
| Professional, Scientific & Management | 15.7% |
| Finance, Insurance & Real Estate | 14.7% |
| Education, Health Care & Social Services | 13.7% |
| Manufacturing | 10.5% |
| Arts, Entertainment & Food Services | 7.7% |
| Retail Trade | 5.3% |
| Information | 2.5% |
| Transportation & Warehousing | 2.0% |
| Public Administration | 1.1% |
| Agriculture & Mining | 0.2% |
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Frequently Asked Questions
Alum Rock, California has a population of 11,619 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 457th-largest city in California.
The median household income in Alum Rock, California is $111,976, with 5.1% of residents living below the federal poverty level.
The median home value in Alum Rock, California is $880,000, with median monthly rent at $2,412 and a homeownership rate of 70.4%.
The median age in Alum Rock, California is 40.3 years. The population is 49.8% male and 50.2% female.
Where to stay in Alum Rock
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Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.