Altadena, CA

ZIP code 91001 belongs to Altadena, California, known for its charming residential neighborhoods and stunning mountain views. This area is home to the iconic Eaton Canyon Natural Area, offering opportunities for hiking and exploring. Other notable landmarks include the Altadena Town & Country Club and the historic Mount Lowe Railway site. With its mix of natural beauty and architectural heritage, ZIP code 91001 is a picturesque slice of Southern California.