Pasadena, CA

ZIP code 91123 is located in Pasadena, California. This area is home to the esteemed California Institute of Technology (Caltech), known for its prestigious science and engineering programs. Other notable landmarks in the vicinity include the historic Pasadena Playhouse, a notable theater in the region. The ZIP code 91123 encompasses a mix of academic and cultural institutions that contribute to the vibrant atmosphere of Pasadena.