Altadena, California Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates
The population of Altadena, California is 41,921 as of the 2023 American Community Survey, making it the 217th-largest city in California. The median household income is $129,123, the median home value is $1,073,500, and the median age is 46.2.
41,921
Population
4952
People / sq mi
$129,123
Median Income
$1,073,500
Median Home Value
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Altadena covers 8.5 sq mi of land at 4952 people per square mile.
About Altadena, CA
In Altadena, home values do the distinguishing — a median of $1,073,500. Altadena is a city in California with a population of 41,921.
Households take in a median $129,123, comfortably above the US median of $78,538. The poverty rate is 5.3%, below the national 12.4%. Real estate commands a premium here — a median home value of $1,073,500, with typical rent around $2,250.
Educational attainment is on the higher side for US cities — 52.7% of adults hold a four-year degree, above the national 35.0%. Remote work is on the higher side at 23.4%, above the national 14.0%, and the average commute runs about 27 minutes each way.
High housing values reframe the income picture in Altadena — even solid earnings stretch less against home prices and rents at this level.
Race & Ethnicity
| White | 46.0% |
| Black or African American | 18.0% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 3.1% |
| Two or More Races | 0.0% |
Economy & Income
$129,123
Median Household Income
$65,192
Per Capita Income
5.3%
Poverty Rate
4.7%
Unemployment Rate
Housing
$1,073,500
Median Home Value
$2,250
Median Rent
78.3%
Owner-Occupied
Education
92.8%
High School+
52.7%
Bachelor's+
Commute
1.5%
Drive Alone
65.3%
Public Transit
23.4%
Work From Home
27.1 min
Avg Commute
Community Profile
22.5%
Foreign Born
68.7%
Non-English at Home
4.2%
Veterans
10.8%
With Disability
96.4%
Health Insurance
97.1%
Internet Access
Employment by Industry
| Professional, Scientific & Management | 28.1% |
| Finance, Insurance & Real Estate | 17.8% |
| Transportation & Warehousing | 7.8% |
| Education, Health Care & Social Services | 7.3% |
| Information | 6.8% |
| Arts, Entertainment & Food Services | 6.5% |
| Public Administration | 5.6% |
| Retail Trade | 4.2% |
| Construction | 3.8% |
| Manufacturing | 3.2% |
| Agriculture & Mining | 0.7% |
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Frequently Asked Questions
Altadena, California has a population of 41,921 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 217th-largest city in California.
The median household income in Altadena, California is $129,123, with 5.3% of residents living below the federal poverty level.
The median home value in Altadena, California is $1,073,500, with median monthly rent at $2,250 and a homeownership rate of 78.3%.
The median age in Altadena, California is 46.2 years. The population is 47.0% male and 53.0% female.
Where to stay in Altadena
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Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.