Alum Rock Flag

Alum Rock

County Seat:
No
Area (mi²):
0.869
State:
California

Alum Rock is a CDP located in Santa Clara County, California. Alum Rock has a 2025 population of 10,905. Alum Rock is currently declining at a rate of -2.76% annually and its population has decreased by -7.57% since the most recent census, which recorded a population of 11,798 in 2020.

The average household income in Alum Rock is $130,196 with a poverty rate of 8.66%.The median age in Alum Rock is 40.3 years: 40.3 years for males, and 40.3 years for females.

10.9K
Total Population
12,550
Density (mi²)
-309 -2.76%
Growth

Alum Rock Population

Alum Rock Population

Data after 2023 is projected based on recent change

Demographics

The racial composition of Alum Rock includes 43.3% other race, 20.57% Asian, 19.55% White, and smaller percentages for Black or African American, Native Hawaiian or Pacific Islander, Native American and multiracial populations.

Population by Race

Race
Population
Percentage (of total)
Other race5,03143.3%
Asian2,39020.57%
White2,27119.55%
Two or more races1,81915.66%
Black or African American490.42%
Native Hawaiian or Pacific Islander320.28%
Native American270.23%

Alum Rock Marital Status

OverallMalesFemales0%10%20%30%40%50%60%70%80%90%100%

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Alum Rock's average per capita income is $49,362. Household income levels show a median of $111,976. The poverty rate stands at 8.66%.

Families: A family includes the owner or renter of the home along with everyone related to them - whether through birth, marriage, or adoption. This includes relatives like spouses, children, parents, siblings, grandparents, and any other family members.
Households: A household includes all the people who occupy a housing unit (such as a house or apartment) as their usual place of residence.
Non Families: A nonfamily household is either someone living alone or when the owner/renter lives with people they aren't related to, like roommates.
Name
Median
Mean
Married Families$124,547-
Families$118,017$122,114
Households$111,976$130,196
Non Families$86,927$101,911

$49,362

Average Income

$111,976

Median Household Income

8.66%

Poverty Rate

Nearby Cities

Sources

  1. US Census State Population Estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  2. US Census County Population Estimates - Most recent county estimates from the Census Bureau's Population Estimates Program
  3. American Community Survey (2009 - 2013)
  4. Census QuickFacts
  5. Historical Populations of States and Counties (1790 - 1990)