Altadena is a city located in Los Angeles County California. With a 2020 population of 42,860, it is the 213th largest city in California and the 1039th largest city in the United States. Altadena is currently growing at a rate of 0.02% annually but its population has decreased by -0.41% since the most recent census, which recorded a population of 43,037 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 7.62%. The median rental costs in recent years comes to $1,781 per month, and the median house value is $802,500. The median age in Altadena is 44.3 years, 42.6 years for males, and 46.3 years for females.
According to the most recent ACS, the racial composition of Altadenawas:
Rate of Home Ownership
Average Family Size
Average Household Size
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 65.41%.
64.70% of Altadena residents speak only English, while 35.30% speak other languages. The non-English language spoken by the largest group is Spanish, which is spoken by 22.64% of the population.
Overall Poverty Rate
Male Poverty Rate
Female Poverty Rate
The race most likely to be in poverty in Altadena is Black, with 11.74% below the poverty level.
The race least likely to be in poverty in Altadena is Multiple, with 2.39% 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%.
Number of Veterans
Veteran Poverty Rate
Veteran Disability Rate
Labor Force Participation
Non citizens include legal permanent residents (green card holders), international students, temporary workers, humanitarian migrants, and illegal immigrants.
Born in Altadena
76.98% of Altadena residents were born in the United States, with 53.79% having been born in California. 7.41% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Latin America.