Below is a list of Guerneville CA zip codes. For your research we have also included Guerneville Area Code, Time Zone, UTC and the local Sonoma County FIPS Code. Each Guerneville California zip code has a center Longitude / Latitude point (the Guerneville center is -122.98600006104 / 38.509899139404). For your convenience we have also indicated if that zip code in Guerneville observes Daylight Savings time.