ZIP Code 91001
About Altadena
Altadena is an unincorporated area and census-designated place in the San Gabriel Valley and the Verdugos regions of Los Angeles County, California. Directly north of Pasadena, it is located approximately 14 miles (23 km) from Downtown Los Angeles. Its population was 42,846 at the 2020 census, up slightly from a 2010 figure of 42,777. In early 2025, the community was severely impacted by the Eaton Fire.
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Area Profile
US Census (ACS 5-year · Gazetteer)
36,402
population
$133,840
median household income
4,407
people / sq mi
$1,085,000
median home value
$2,298
median gross rent
46.1
median age
13,335
housing units
12,724
households
8.3
land area (sq mi)
Key places in 91001
- Charles S. Farnsworth Park park
- Charles White Park park
- Mount Lowe Park park
- Case Study House #20 historic
Nearby notable places
- Brown Mountain nature
Points of interest
- grocery
- coffee
- gas
- fast_food
Brands
- Jack in the Box (2)
- Aldi (1)
- McDonald's (1)
- Panda Express (1)