Pleasanton, CA

ZIP code 94566 covers the city of Pleasanton, California. Known for its charming downtown area, landmarks in this ZIP code include the Alameda County Fairgrounds, which hosts the annual county fair and other events, as well as the Shadow Cliffs Regional Recreation Area, a popular spot for swimming and picnicking in the warm months. It is also home to Pleasanton Ridge Regional Park, offering hiking and stunning views of the surrounding area.