Below is a list of Foster City CA zip codes. For your research we have also included Foster City Area Code, Time Zone, UTC and the local San Mateo County FIPS Code. Each Foster City California zip code has a center Longitude / Latitude point (the Foster City center is -122.26899719238 / 37.547901153564). For your convenience we have also indicated if that zip code in Foster City observes Daylight Savings time.