Portola Valley, CA

ZIP code 94028 encompasses the town of Portola Valley in Northern California. Nestled in the lush hills of San Mateo County, this area is known for its upscale homes, rural charm, and proximity to nature. Standout landmarks include the beautiful Portola Valley Town Center, Windy Hill Open Space Preserve with its scenic hiking trails, and the Stanford University campus bordering the eastern edge of the zip code.