Pasadena, CA

ZIP code 91121 is located in Pasadena, California. One of the most important landmarks in this area is the California Institute of Technology (Caltech), a renowned research university known for its significant contributions to science and technology. Additionally, the Jet Propulsion Laboratory (JPL), which is managed by Caltech for NASA, is another notable landmark in this ZIP code, showcasing advancements in space exploration and robotics.