Altadena, California Population 2021

44,850
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Altadena is a city located in California. Altadena has a 2020 population of 44,850. Altadena is currently declining at a rate of 0.00% annually and its population has increased by 4.85% since the most recent census, which recorded a population of 42,777 in 2010. Altadena reached it's highest population of 45,236 in 2017.

The average household income in Altadena is $135,929 with a poverty rate of 7.51%. The median rental costs in recent years comes to $1,692 per month, and the median house value is $742,800. The median age in Altadena is 44.3 years, 42.6 years for males, and 46.3 years for females. For every 100 females there are 96.0 males.

Altadena Demographics

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

  • White: 54.29%
  • Black or African American: 22.17%
  • Other race: 11.21%
  • Asian: 6.44%
  • Two or more races: 4.93%
  • Native American: 0.83%
  • Native Hawaiian or Pacific Islander: 0.13%
The current population of Altadena, California is 44,850, based on our projections of the latest US Census estimates. The US Census estimates the 2018 population at 45,146.The last official US Census in 2010 recorded the population at 42,777.

Altadena, California Population 2021

Population by Race

Race Population Percentage
White24,34954.29%
Black or African American9,94422.17%
Some Other Race5,02711.21%
Asian2,8886.44%
Two or More Races2,2124.93%
American Indian and Alaska Native3710.83%
Native Hawaiian and Other Pacific Islander590.13%
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Altadena Population by Race

Altadena Population Pyramid 2021

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Altadena Median Age

44.3


Total

42.6


Male

46.3


Female

Altadena Adults

There are 36,040 adults, (8,233 of whom are seniors) in Altadena.

Altadena Age Dependency

61.3

Age Dependency Ratio

29.6

Old Age Dependency Ratio

31.7

Child Dependency Ratio

Altadena Sex Ratio

Female

22,883

51.02%

Male

21,967

48.98%

Altadena Population by Age

Altadena Renter vs Owner Occupied by Household Type

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Altadena Household Types

Type Owner Renter
Male86.3%13.7%
Married77.8%22.2%
All72%28%
Female65.5%34.5%
Non Family61.7%38.3%

72.0%

Rate of Home Ownership

Altadena Households and Families

Type Count Average Size Owned
All15,2652.972
Married8,3093.477.8
Non Family4,2061.3461.7
Female2,0923.8365.5
Male6583.5986.3

3.38

Average Family Size

2.9

Average Household Size

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Altadena Households by Type

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Education Attained Count Percentage
Less Than 9th Grade2,4197.36%
9th to 12th Grade1,1443.48%
High School Graduate5,11415.56%
Some College6,89620.99%
Associates Degree2,3897.27%
Bachelors Degree7,64923.28%
Graduate Degree7,24822.06%
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Altadena Educational Attainment by Sex (over 25)

Altadena Educational Attainment by Race

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Name Total High School Bachelors
White14,51013,6558,806
Hispanic7,5195,3041,714
Black7,5137,2052,203
Other Race3,1402,005453
Asian2,3862,2481,622
Multiple Races1,0481,001663
Native American22216028
Islander55

The highest rate of high school graduation is among islander people with a rate of 100.00%.

The highest rate of bachelors degrees is among asian people with a rate of 67.98%.

Altadena Educational Attainment by Race

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Name Average Male Female
Overall$52,455$60,469$42,265
Less Than High School$26,260$31,126$18,769
High School Grad$28,111$34,297$24,003
Some College$40,607$46,172$33,698
Bachelors Degree$72,292$80,292$63,655
Graduate Degree$92,080$120,080$74,258

$52,455

Average Earnings

$60,469

Average Male

$42,265

Average Female

Altadena Earnings by Educational Attainment

Altadena Language by Age

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Altadena Language

68.63% of Altadena residents speak only English, while 31.37% speak other languages. The non-English language spoken by the largest group is Spanish, which is spoken by 20.06% of the population.

Altadena Language

Altadena Poverty by Race

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Name Total In Poverty Poverty Rate
White17,7581,0265.78%
Black9,8781,02010.33%
Hispanic12,2311,0048.21%
Other4,9384939.98%
Asian2,8761836.36%
Multiple2,2081034.66%
Native371225.93%

7.51%

Overall Poverty Rate

7.36%

Male Poverty Rate

7.66%

Female Poverty Rate

Poverty in Altadena

The race most likely to be in poverty in Altadena is Black, with 10.33% below the poverty level.

The race least likely to be in poverty in Altadena is Multiple, with 4.66% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 1.69%. Among those working part-time, it was 9.19%, and for those that did not work, the poverty rate was 12.94%.

Altadena Poverty

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Name Poverty
Less Than High School19.34%
High School12.93%
Some College5.07%
Bachelors or Greater3.78%

Altadena Poverty Rate by Education

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Name Poverty
Female Unemployed10.98%
Male Unemployed7.25%
Female Employed4.55%
Male Employed3.74%

Altadena Poverty Rate by Employment Status and Sex

Altadena Income by Household Type

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Name Median Mean
Households$98,693$135,929
Families$108,183$150,466
Married Families$128,263-
Non Families$52,656$88,991
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Income by Household Type

Altadena Marital Status

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Marriage Rates

49.2%

Overall Marriage Rate

52.5%

Male Marriage Rate

46.3%

Female Marriage Rate

Altadena Married by Age and Sex

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Altadena 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 35-44.

Altadena Marital Status by Race

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Altadena Marital Status

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2,054

Number of Veterans

1,882

Male Veterans

172

Female Veterans

War Veterans
Vietnam545
Korea353
Second Gulf War293
First Gulf War228
World War II86

Altadena Veterans by War

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Age Group Veterans
75+848
35 to 54438
65 to 74365
55 to 64298
18 to 34105

Altadena Veterans by Age

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Name Veterans % of Total
White9974.97%
Black85310.30%
Hispanic1932.23%
2 or More1048.97%
Other431.12%
Indian4017.02%
Asian170.69%

Altadena Veterans by Race

Altadena Veterans by Education

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4.05%

Veteran Poverty Rate

27.18%

Veteran Disability Rate

Altadena Veterans by Education

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64.4%

Labor Force Participation

60.8%

Employment Rate

5.6%

Unemployment Rate

Altadena Employment by Age

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Altadena Employment by Race

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Altadena Employment by Education

Origin of Non-Citizens

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

Origin of Naturalized Citizens

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55.48%

Born in California

80.29%

Native Born

19.71%

Foreign Born

7.57%

Non Citizen

12.14%

Naturalized

Place of Birth

80.29% of Altadena residents were born in the United States, with 55.48% having been born in California. 7.57% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Latin America.

Altadena Place of Birth

Year Population Growth Annual Growth Rate
202144,8500.00%
202044,8500.00%
201944,850-296-0.66%
201845,146-90-0.20%
201745,2362350.52%
201645,0013800.85%
201544,621-1-0.00%
201444,622-393-0.87%
201345,0154370.98%
201244,578-428-0.95%
201145,0062,2295.21%
201042,7770.00%

Altadena Population by Year