Below is a list of Walnut Grove CA zip codes. For your research we have also included Walnut Grove Area Code, Time Zone, UTC and the local Sacramento County FIPS Code. Each Walnut Grove California zip code has a center Longitude / Latitude point (the Walnut Grove center is -121.51300048828 / 38.243698120117). For your convenience we have also indicated if that zip code in Walnut Grove observes Daylight Savings time.