Below is a list of Portola Valley CA zip codes. For your research we have also included Portola Valley Area Code, Time Zone, UTC and the local San Mateo County FIPS Code. Each Portola Valley California zip code has a center Longitude / Latitude point (the Portola Valley center is -122.2200012207 / 37.375301361084). For your convenience we have also indicated if that zip code in Portola Valley observes Daylight Savings time.