Below is a list of San Ysidro CA zip codes. For your research we have also included San Ysidro Area Code, Time Zone, UTC and the local San Diego County FIPS Code. Each San Ysidro California zip code has a center Longitude / Latitude point (the San Ysidro center is -116.57099914551 / 33.253700256348). For your convenience we have also indicated if that zip code in San Ysidro observes Daylight Savings time.