Below is a list of Penngrove CA zip codes. For your research we have also included Penngrove Area Code, Time Zone, UTC and the local Sonoma County FIPS Code. Each Penngrove California zip code has a center Longitude / Latitude point (the Penngrove center is -122.66600036621 / 38.299701690674). For your convenience we have also indicated if that zip code in Penngrove observes Daylight Savings time.