Below is a list of Vernalis CA zip codes. For your research we have also included Vernalis Area Code, Time Zone, UTC and the local San Joaquin County FIPS Code. Each Vernalis California zip code has a center Longitude / Latitude point (the Vernalis center is -121.29000091553 / 37.631198883057). For your convenience we have also indicated if that zip code in Vernalis observes Daylight Savings time.