Pasadena, CA

ZIP code 91109 is located in Pasadena, California. This area is best known for being the location of the California Institute of Technology (Caltech) and the Jet Propulsion Laboratory (JPL). These two prestigious institutions are major landmarks in the area, contributing to Pasadena's reputation as a hub for scientific and technological advancements. Additionally, ZIP code 91109 is home to beautiful green spaces and residential neighborhoods.