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ZIP code 91001

Altadena, CA · Los Angeles County

About ZIP code 91001

  • ZIP code 91001 is in Altadena, Los Angeles County, California.
  • About 35,475 people live in it, which is 1,658.2 people per square mile.
  • Time zone: Pacific Standard Time.
  • The middle of the ZIP code is at 34.195, -118.139.

A ZIP code is a mail delivery area, not a town border, and one ZIP code can cover parts of several towns. To check a single address, use the US Postal Service lookup.

Altadena, CA

ZIP code 91001 is the post office name for Altadena, CA. 41,705 people live in Altadena. Typical household income is $128,720. A typical home costs $1,120,000.

  • Stronger than most towns on: Pleasant weather for being outdoors, Diversity & community and Public transit.
  • Weaker than most towns on: Clean air and low disaster risk, Cost of living and Housing affordability.

See all figures for Altadena

Nearby ZIP codes

ZIP code list from SimpleMaps US Zips. Population is a US Census Bureau estimate. These are estimates, so check official sources before you decide.