Below is a list of Round Mountain CA zip codes. For your research we have also included Round Mountain Area Code, Time Zone, UTC and the local Shasta County FIPS Code. Each Round Mountain California zip code has a center Longitude / Latitude point (the Round Mountain center is -121.94200134277 / 40.794399261475). For your convenience we have also indicated if that zip code in Round Mountain observes Daylight Savings time.