Alum Rock, California Population 2024

11,864

Alum Rock is a city located in Santa Clara County California. Alum Rock has a 2024 population of 11,864. Alum Rock is currently growing at a rate of 0.14% annually and its population has increased by 0.56% since the most recent census, which recorded a population of 11,798 in 2020.

The average household income in Alum Rock is $127,272 with a poverty rate of 9.85%. The median age in Alum Rock is 38 years: 38.1 years for males, and 37.8 years for females.

Alum Rock Demographics

According to the most recent ACS, the racial composition of Alum Rock was:

  • Other race: 42.92%
  • White: 25.69%
  • Asian: 17.01%
  • Two or more races: 13.56%
  • Black or African American: 0.33%
  • Native Hawaiian or Pacific Islander: 0.25%
  • Native American: 0.24%
Land Area (mi²)
0.9 sq mi
Density (mi²)
13,653.60/sq mi
Growth Since 2020
0.56% (66)
The current population of Alum Rock, California is 11,864 based on our projections of the latest US Census estimates (released May 2024). The last official US Census in 2020 recorded the population at 11,798.

Population by Race

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Race
Population
Percentage (of total)
Other race5,07842.92%
White3,03925.69%
Asian2,01317.01%
Two or more races1,60413.56%
Black or African American390.33%
Native Hawaiian or Pacific Islander300.25%
Native American280.24%

Other race

White

Asian

Two or more races

Black or African American

Native Hawaiian or Pacific Islander

Native American

Alum Rock Population by Race

Alum Rock Population Pyramid 2024

Alum Rock Median Age

38

Total

38.1

Male

37.8

Female

Alum Rock Adults

There are 9,234 adults, (1,830 of whom are seniors) in Alum Rock.

Alum Rock Age Dependency

59.8

Age Dependency Ratio

24.7

Old Age Dependency Ratio

35.1

Child Dependency Ratio

Alum Rock Sex Ratio

Female5,93150.13%
Male5,90049.87%

Alum Rock Population by Age

Alum Rock Renter vs Owner Occupied by Household Type

Household Type
Count
Average Size
Owner
Renter
All2,7744.1270.729.3
Married1,5024.6372.227.8
Female4934.8752.147.9
Non Family4781.4279.520.5
Male3014.6879.120.9

4.2

Average Family Size

4.12

Average Household Size

70.7%

Rate of Home Ownership

Married

Male

Female

NonFamily

owner

renter

Alum Rock Households and Families

Male

Female

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Education Attained
Count
Percentage
9th to 12th Grade1,10813.92%
Associates Degree5897.4%
Bachelors Degree96012.06%
Graduate Degree5136.44%
High School Graduate2,36529.71%
Less Than 9th Grade1,47318.51%
Some College95211.96%

Less Than 9th Grade

9th to 12th Grade

High School Graduate

Some College

Associates Degree

Bachelors Degree

Graduate Degree

Alum Rock Educational Attainment by Sex (over 25)

Alum Rock Educational Attainment by Race

High School Graduation Rate

Bachelors Rate

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Race
Total
High School
Bachelors
Hispanic5,1393,053693
Other Race3,0851,767377
Asian1,6431,367436
White1,032844306
2+ Races91942499
Black313115
Islander301717
Native American28200

The highest rate of high school graduation is among black people with a rate of 100%.

The highest rate of bachelors degrees is among islander people with a rate of 56.67%.

Alum Rock Educational Attainment by Race

All

Male

Female

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Name
Average
Male
Female
Bachelors Degree$65,000$67,755$61,875
Graduate Degree$114,292$125,798$100,556
High School Graduate$41,983$45,352$38,810
Less Than 9th Grade$38,609$45,107$31,538
Overall$46,313$50,013$39,319
Some College$45,800$50,515$39,948

$46,313

Average Earnings

$50,013

Average Male

$39,319

Average Female

Alum Rock Earnings by Educational Attainment

Alum Rock Language by Age

Only English

Spanish

Other Indo-European Languages

Asian and Pacific Island Languages

Other Languages

Alum Rock Language

30.1% of Alum Rock residents speak only English, while 69.9% speak other languages. The non-English language spoken by the largest group is Spanish, which is spoken by 53.4% of the population.

Alum Rock Language

Alum Rock Poverty by Race

rate

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Name
Total
In Poverty
Poverty Rate
Hispanic8,2667759.38%
Other5,01870514.05%
Asian1,95930315.47%
White1,204433.57%
Multiple1,602211.31%
Islander301343.33%
Native27829.63%

9.85%

Overall Poverty Rate

8.26%

Male Poverty Rate

11.43%

Female Poverty Rate

Poverty in Alum Rock

The race most likely to be in poverty in Alum Rock is Islander, with 43.33% below the poverty level.

The race least likely to be in poverty in Alum Rock is Multiple, with 1.31% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 2.28%. Among those working part-time, it was 9.45%, and for those that did not work, the poverty rate was 20.31%.

Alum Rock Poverty

rate

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Rate
Poverty
Less Than 9th Grade17.39%
Some College8.66%
High School4.12%
Bachelors or Greater3.93%

Alum Rock Poverty Rate by Education

rate

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Rate
Poverty
Female Unemployed27.27%
Male Unemployed15.38%
Female Employed5.17%
Male Employed3.11%

Alum Rock Poverty Rate by Employment Status and Sex

Alum Rock Income by Household Type

Households

Families

MarriedFamilies

NonFamilies

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Name
Median
Mean
Families$109,107$120,473
Households$108,929$127,272
Married Families$121,635$-999,999,999
Non Families$78,333$101,094

mean

median

Income by Household Type

Alum Rock Marital Status

Married

Widowed

Divorced

Separated

NeverMarried

Marriage Rates

46.3%

Overall Marriage Rate

48.9%

Male Marriage Rate

43.6%

Female Marriage Rate

Alum Rock Married by Age and Sex

male

female

Alum Rock Marriage

The age group where males are most likely to be married is 55-64, while the female age group most likely to be married is 55-64.

Alum Rock Marital Status by Race

Married

Widowed

Divorced

Separated

NeverMarried

Alum Rock Marital Status

Second Gulf War

First Gulf War

Vietnam

Korea

World War II

304

Number of Veterans

270

Male Veterans

34

Female Veterans

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War
Veterans
Second Gulf War133
Vietnam123
Korea37
First Gulf War10
World War II0

Alum Rock Veterans by War

count

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Age Group
Veterans
65 to 7484
75+68
55 to 6461
18 to 3457
35 to 5434

Alum Rock Veterans by Age

count

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Name
Veterans
% of Total
Hispanic2183.55%
White1717.32%
Other Race972.53%
2+ Races211.9%
Asian100.57%
Black512.82%

Alum Rock Veterans by Race

Alum Rock Veterans by Education

Less Than 9th Grade

High School Graduate

Some College

Bachelors or Greater

8.93%

Veteran Poverty Rate

25.77%

Veteran Disability Rate

Alum Rock Veterans by Education

LaborForceParticipation

65.6%

Labor Force Participation

61.2%

Employment Rate

5.3%

Unemployment Rate

Alum Rock Employment by Age

LaborForceParticipation

Alum Rock Employment by Race

LaborForceParticipation

Alum Rock Employment by Education

Origin of Non-Citizens

Europe

Asia

Africa

Oceania

Latin America

North America

Non citizens include legal permanent residents (green card holders), international students, temporary workers, humanitarian migrants, and illegal immigrants.

Origin of Naturalized Citizens

Europe

Asia

Africa

Oceania

Latin America

North America

52.13%

Born in Alum Rock

59.23%

Native Born

40.77%

Foreign Born

21.08%

Non Citizen

19.69%

Naturalized

Place of Birth

59.23% of Alum Rock residents were born in the United States, with 52.13% having been born in California. 21.08% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Latin America.

Alum Rock Place of Birth

Note: data after 2022 is projected based on recent change

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Year
Population
Growth
Growth Rate
202411,864170.14%
202311,847160.14%
202211,831-387-3.17%
202112,2184203.56%
202011,7982472.14%
201911,551-240-2.04%
201811,791-337-2.78%
201712,1282512.11%
201611,8778267.47%
201511,051590.54%
201410,992-361-3.18%
201311,353-443-3.76%
201211,796-18-0.15%
201111,814-3,722-23.96%
201015,53600%

Alum Rock Population by Year