Altadena, CA ZIP codes
Altadena, California has 2 ZIP codes, including 1 PO Box ZIP. They are in Los Angeles County.
- Population in these ZIPs
- 35,475
- Avg. median income
- $134,900population-weighted
- Typical home value
- $1,126,400population-weighted
- Metro area
- Los Angeles-Long Beach-Anaheim, CA
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Altadena, CA ZIP codes list
| ZIP code | County | Population | Median income | Typical home value |
|---|---|---|---|---|
| 91001 | Los Angeles County | 35,475 | $134,903 | $1,126,400 |
| 91003 PO Box | Los Angeles County | — | — | — |
Population and median household income: ACS 2020–2024 5-year estimates. Typical home value: Zillow Home Value Index (September 2026) where available, otherwise the ACS median owner-reported value. "PO Box" marks ZIP codes with no delivery area of their own. Methodology
Cities near Altadena
- Pasadena 3 mi
- La Canada Flintridge 4 mi
- San Marino 5 mi
- Sierra Madre 5 mi
- Montrose 5 mi
- South Pasadena 6 mi
- Verdugo City 6 mi
- San Gabriel 7 mi
- La Crescenta 7 mi
- Arcadia 7 mi
- Alhambra 7 mi
- Glendale 7 mi
Frequently asked questions
What county is Altadena, California in?
Altadena ZIP codes are in Los Angeles County.
Which Altadena ZIP codes are PO Boxes?
91003 is a PO Box or single-organization ZIP code; it has no residential delivery area.