Altadena, CA

ZIP code 91003 covers the city of Altadena, California. This area is known for its proximity to the Angeles National Forest and the beautiful hiking trails it offers. Notable landmarks in ZIP code 91003 include the lovely Farnsworth Park, the historic Mount Lowe Railway site, and the renowned Eaton Canyon Natural Area with its popular waterfall hike. This scenic and nature-filled community attracts outdoor enthusiasts and nature lovers alike.