91001   Zip Code Altadena Los Angeles CA United States

City Altadena
County Los Angeles
State California
Latitude 34.19522
Longitude -118.13866
Population 35,475
Density 4295.85 people per square mile
Time Zone America/Los Angeles
  • All demographic data comes from the 2024 American Community Survey (5-year study).
  • Learn more about each field.
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Household Income

Median household: $134,903
Median individual: $52,778

Race

Mode: 39.0% White

Gender

 51.4% female 

Rent

  $2437 / month  

Median house value: $1,135,198.0

Age

Median: 46.3 years old

Education

With at least college degree: 53.9%
With STEM degree: 45.7%

Marital Status

 48.5% married 

Never married: 33.1%

Labor Force Participation

 64.2% working 

Unemployed: 7.4%

Average Family Size

 3.24 people 

Commute Time

 28.0 minutes 

Health Care

 3.4% uninsured 

Poverty

 7.4%

All data comes from the SimpleMaps US Zips Comprehensive Database, February 2026.

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