There are 242,380 earthquake incidents in California on record since 1931. The state averages 2,920 earthquakes per year. The largest earthquake on record for California occurred on 06/28/1992, with a depth of 11.1 miles and a magnitude of 7.3 on the Richter scale in San Bernardino County, CA.
Yearly Average Number of Earthquakes in California
Total Number of Earthquakes in California since 1931