View a map of the businesses, restaurants, and shopping in zip code 91001, Altadena, CA. Read reviews and get directions to where you want to go.

Find directions to Altadena, CA, browse local businesses, landmarks, get current traffic estimates, road conditions, and more. Altadena, California, is a charming unincorporated area nestled at the base of the San Gabriel Mountains, known for its scenic beauty and historic landmarks.

Altadena is an unincorporated area and census-designated place in the Verdugo Mountains region of Los Angeles County, California, approximately 14 miles from downtown Los Angeles, and directly north of the city of Pasadena, California.

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 from Downtown Los Angeles. Its population was 42,846 at the 2020 census, up slightly from a 2010 figure of 42,777.

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Interactive and printable 91001 ZIP code maps, population demographics, Altadena CA real estate costs, rental prices, and home values.

ZIP Code 91001 is located in Altadena California. Portions of 91001 are also in Pasadena and Mount Wilson. 91001 is entirely within Los Angeles County. Regionally, 91001 is located in Metro Los Angeles.

Average elevation: 1,709 ft • Altadena, California, 91001, United States • Visualization and sharing of free topographic maps.

Jan 1, 2025 · ZIP Code 91001 is located in the city of Altadena, California and covers 8.26 square miles of land area. It is also located within Los Angeles County. According to the 2020 U.S. Census, there are 36,578 people in 12,928 households. ZIP-Codes.com estimates that the current population is 36,426.

Jan 1, 2025 · ZIP Codes: Altadena, CA has only 2 ZIPs assigned to it by the U.S. Postal Service. 91001 & 91003 (PO Box) County: The County, Parish, Borough, or Planning Region that ZIPs in Altadena, CA at least partially reside in. These can be completely inside the County, or they can cross into several Counties.