Below is a list of Atherton CA zip codes. For your research we have also included Atherton Area Code, Time Zone, UTC and the local San Mateo County FIPS Code. Each Atherton California zip code has a center Longitude / Latitude point (the Atherton center is -122.20500183105 / 37.45539855957). For your convenience we have also indicated if that zip code in Atherton observes Daylight Savings time.