Altadena demographics profile

Population density (sq mi)5,16423291
Median age43.236.037.7
Male/Female ratio1.0:11.0:11.0:1
Married (15yrs & older)56%52%55%
Families w/ Kids under 1836%46%43%
Speak English68%56%79%
Speak Spanish20%29%13%
Altadena, CA has a population of 45,001 and is the 912th largest city in the United States. The population density is 5,164 per sq mi which is 2122% higher than the California average and 5600% higher than the national average. The median age in Altadena is 43 which is approximately 20% higher than the California average of 36. In Altadena, 56% of the population over 15 years of age are married, 68% speak English and 20% speak Spanish. 54% of Altadena residents were born in California, 25% were born out of state, 1% were born outside of the United States and 20% were foreign born.
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Did you know?

  • The population density in Altadena is 2122% higher than California.
  • The median age in Altadena is 20% higher than California.
  • In Altadena 54.27% of the population is White.
  • In Altadena 22.03% of the population is Black or African American.
  • In Altadena 7.60% of the population is Asian.

Compare Altadena, CA Demographics To Other Cities

Altadena population breakdown by race

Black or African American22.03%5.85%12.63%
American Indian0.28%0.74%0.82%
Native Hawaiian0.02%0.39%0.18%
Mixed race5.90%4.62%3.06%
Other race9.90%13.28%4.75%
In Altadena, 26.6% of people are of Hispanic or Latino origin.
Please note: Hispanics may be of any race, so also are included in any/all of the applicable race categories above.

Languages spoken

Place of birth by citizenship

Household income distribution

Source of income

Altadena age breakdown

Marital status

Age of children in married couples

Source: The Altadena, CA demographics data displayed above is derived from the 2016 United States Census Bureau American Community Survey (ACS).
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