Altadena, CA

ZIP code 91001 covers the town of Altadena, located in Los Angeles County, California. This area is known for its stunning views of the San Gabriel Mountains and proximity to hiking trails in the Angeles National Forest. Landmarks within the ZIP code include the Altadena Town and Country Club, the Cobb Estate trailhead, and Farnsworth Park, offering residents and visitors a wide range of outdoor recreational opportunities.