Altadena, California Population 2023

42,867

Altadena is a city located in Los Angeles County California. With a 2023 population of 42,867, it is the 213th largest city in California and the 1046th largest city in the United States.Altadena is currently growing at a rate of 0.02% annually and its population has increased by 0.05% since the most recent census, which recorded a population of 42,846 in 2020. Spanning over 8 miles, Altadena has a population density of 5,063 people per square mile.

The average household income in Altadena is $135,929 with a poverty rate of 9%. The median rental costs in recent years comes to - per month, and the median house value is -. The median age in Altadena is 45.4 years, 43.4 years for males, and 47.2 years for females.

Altadena Demographics

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

  • White: 53.18%
  • Black or African American: 19.67%
  • Other race: 14.31%
  • Two or more races: 6.94%
  • Asian: 5.16%
  • Native American: 0.64%
  • Native Hawaiian or Pacific Islander: 0.1%
The current population of Altadena, California is 42,867 based on our projections of the latest US Census estimates.The last official US Census in 2020 recorded the population at 42,846.

Altadena, California Population 2023

Population by Race

White

Black or African American

Other race

Two or more races

Asian

Native American

Native Hawaiian or Pacific Islander

Altadena Population by Race

Altadena Population Pyramid 2023

Altadena Median Age

45.4

Total

43.4

Male

47.2

Female

Altadena Adults

There are 34,717 adults, (8,627 of whom are seniors) in Altadena.

Altadena Age Dependency

65

Age Dependency Ratio

33.1

Old Age Dependency Ratio

31.9

Child Dependency Ratio

Altadena Sex Ratio

Female22,86653.13%
Male20,17146.87%

Altadena Population by Age

Altadena Renter vs Owner Occupied by Household Type

3.28

Average Family Size

2.83

Average Household Size

70.7%

Rate of Home Ownership

Married

Male

Female

NonFamily

owner

renter

Altadena Households and Families

Male

Female

Less Than 9th Grade

9th to 12th Grade

High School Graduate

Some College

Associates Degree

Bachelors Degree

Graduate Degree

Altadena Educational Attainment by Sex (over 25)

Altadena Educational Attainment by Race

High School Graduation Rate

Bachelors Rate

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

The highest rate of bachelors degrees is among asian people with a rate of 62.6%.

Altadena Educational Attainment by Race

All

Male

Female

$49,859

Average Earnings

$55,833

Average Male

$40,418

Average Female

Altadena Earnings by Educational Attainment

Altadena Language by Age

Only English

Spanish

Other Indo-European Languages

Asian and Pacific Island Languages

Other Languages

Altadena Language

64.7% of Altadena residents speak only English, while 35.3% speak other languages. The non-English language spoken by the largest group is Spanish, which is spoken by 22.64% of the population.

Altadena Language

Altadena Poverty by Race

rate

9%

Overall Poverty Rate

7.08%

Male Poverty Rate

8.09%

Female Poverty Rate

Poverty in Altadena

The race most likely to be in poverty in Altadena is Other, with 17% below the poverty level.

The race least likely to be in poverty in Altadena is Multiple, with 3.48% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 1.97%. Among those working part-time, it was 7.68%, and for those that did not work, the poverty rate was 12.91%.

Altadena Poverty

Altadena Poverty Rate by Education

Altadena Poverty Rate by Employment Status and Sex

Altadena Income by Household Type

Households

Families

MarriedFamilies

NonFamilies

mean

median

Income by Household Type

Altadena Marital Status

Married

Widowed

Divorced

Separated

NeverMarried

Marriage Rates

49.5%

Overall Marriage Rate

54.3%

Male Marriage Rate

45.3%

Female Marriage Rate

Altadena Married by Age and Sex

male

female

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

Married

Widowed

Divorced

Separated

NeverMarried

Altadena Marital Status

Second Gulf War

First Gulf War

Vietnam

Korea

World War II

1,827

Number of Veterans

1,668

Male Veterans

159

Female Veterans

Altadena Veterans by War

Altadena Veterans by Age

count

Altadena Veterans by Race

Altadena Veterans by Education

Less Than 9th Grade

High School Graduate

Some College

Bachelors or Greater

3.62%

Veteran Poverty Rate

29.09%

Veteran Disability Rate

Altadena Veterans by Education

LaborForceParticipation

62.7%

Labor Force Participation

58.7%

Employment Rate

6.3%

Unemployment Rate

Altadena Employment by Age

LaborForceParticipation

Altadena Employment by Race

LaborForceParticipation

Altadena 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

54.03%

Born in Altadena

77.32%

Native Born

23.12%

Foreign Born

7.44%

Non Citizen

15.68%

Naturalized

Place of Birth

77.32% of Altadena residents were born in the United States, with 54.03% having been born in California. 7.44% 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

Note: data after 2020 is projected based on recent growth

Altadena Population by Year