Below is a list of Tustin CA zip codes. For your research we have also included Tustin Area Code, Time Zone, UTC and the local Orange County FIPS Code. Each Tustin California zip code has a center Longitude / Latitude point (the Tustin center is -117.81199645996 / 33.749000549316). For your convenience we have also indicated if that zip code in Tustin observes Daylight Savings time.