Below is a list of Holt CA zip codes. For your research we have also included Holt Area Code, Time Zone, UTC and the local San Joaquin County FIPS Code. Each Holt California zip code has a center Longitude / Latitude point (the Holt center is -121.42900085449 / 37.926399230957). For your convenience we have also indicated if that zip code in Holt observes Daylight Savings time.