Altadena Flag

Altadena

County Seat:
No
Area (mi²):
8.465
State:
California

Altadena is a CDP located in Los Angeles County, California. Altadena has a 2026 population of 41,723. Altadena is currently declining at a rate of -0.16% annually and its population has decreased by 0% since the most recent census, which recorded a population of 0 in 2020.

The median household income in Altadena is $128,720 with a poverty rate of 7.91%. The median age in Altadena is 46.4 years: 43.6 years for males, and 48.6 years for females. For every 100 females there are 89.9 males.

41.7K
Total Population
4,929
Density (mi²)
-66 -0.16%
Growth

Altadena Population

Altadena Population

Data after 2023 is projected based on recent change

Year ↓
Population
Growth
Annual Change
202641,723-66-0.16%
202541,789-66-0.16%

Median Age

Overall: 46.4 years
Female: 48.6 years
Male: 43.6 years

Altadena Adults

There are 33,731 adults, (9,186 of whom are seniors) in Altadena.

Sex Ratio

Female: 21,960 (52.7%)
Male: 19,745 (47.3%)

Demographics

The racial composition of Altadena includes 43.14% White, 17.19% Black or African American, 13.5% other race, 6.53% Asian, and smaller percentages for Native American, Native Hawaiian or Pacific Islander and multiracial populations.

Population by Race

Race
Population ↓
Percentage (of total)
White17,99143.14%
Two or more races7,91318.97%
Black or African American7,16817.19%
Other race5,63013.5%
Asian2,7226.53%
Native American2660.64%
Native Hawaiian or Pacific Islander150.04%
Race
Population ↓
Percentage (of total)
Other race5,34612.82%
Two or more races4,56110.94%
White7661.84%
Native American2450.59%
Black or African American1060.25%
Asian950.23%
Race
Population ↓
Percentage (of total)
White17,22541.3%
Black or African American7,06216.93%
Two or more races3,3528.04%
Asian2,6276.3%
Other race2840.68%
Native American210.05%
Native Hawaiian or Pacific Islander150.04%

Altadena Marital Status

Economics and Income Statistics

Altadena 's average per capita income is $68,043. Household income levels show a median of $128,720. The poverty rate stands at 7.91%.

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$184,272-
Families$148,780$206,177
Households$128,720$180,522
Non Families$75,592$104,817

$68,043

Average Income

$128,720

Median Household Income

7.91%

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)