Altadena is a city of 41,705 people in California. Home values have more than tripled since 2000, reaching $1,120,000. At a median age of 46.4, this is an older place than the country as a whole. 53% of adults hold a bachelor's degree, against 36% nationally. That puts it in the top 3% of US cities for household income. Renters pay $2,355 a month at the median.
At a glance
Wealthier
median household income $128,720, above the US median
US median: $82,259
Older
median age 46.4
US median: 38.9
More educated
53% hold a bachelor's degree
US average: 36%
Less affordable
home values up 137%, inflation adjusted
US median home: $376,019
Unique to this place
What stands out about Altadena
What changed most since 1990
Black share38.2% → 16.9%(−21.3 pts)US over the same years: +0.2 pts
Median age34.8 → 46.4(+11.6 years)US over the same years: +6.0 years
Median home value (2024 dollars)$572,416 → $1,120,000(+96%)US over the same years: +67%
Shares are "alone or in combination": a person with both Medicare and Medicaid counts in each, so categories overlap and do not sum to 100%.
Section 09 · Service history
Veterans
Veterans by period of service, 2024
Gulf War (2001 or later)4.7%(58)
US avg: 26.4%
Gulf War (1990s)14.2%(174)
US avg: 24.3%
Vietnam era36.5%(448)
US avg: 33.1%
Korean War9.9%(122)
US avg: 4.5%
World War II6.9%(85)
US avg: 1%
Share of the 1,228 veterans here. A veteran who served across eras counts in each, so shares can total more than 100%. Peacetime-only service is included in the total but not shown as an era.
BAR + DOT: THIS PLACE · TICK: US AVERAGE
Over time
Altadena, decade by decade
Altadena population, inflation-adjusted income and home value, education, and diversity by year
Year
Population
Median household income
Median home value
Bachelor's degree+
Diversity score
1990
42,658
$105,776
$572,416
33.3%
80.8
2000
42,610
$110,299
$472,719
38.9%
87.9
2010
42,777
$119,170
$920,110
41.7%
88.6
2020
42,846
$122,181
$972,661
45.9%
88.8
2024
41,705
$128,720
$1,120,000
53.3%
89.7
Census years come from the decennial census and the latest year from the American Community Survey, so part of any change between those two rows can reflect the different surveys. Dollar figures are adjusted for inflation to 2024 dollars; a figure ending in "+" was at the Census Bureau's reporting cap that year. The diversity score runs from 0 to 100; see how it's calculated.
