Below is a list of Downieville CA zip codes. For your research we have also included Downieville Area Code, Time Zone, UTC and the local Sierra County FIPS Code. Each Downieville California zip code has a center Longitude / Latitude point (the Downieville center is -120.82499694824 / 39.558700561523). For your convenience we have also indicated if that zip code in Downieville observes Daylight Savings time.