California Earthquake Facts and Statistics for 2025
Last Updated on: May 29th, 2025
Here are a few of the most interesting California Earthquake facts and statistics I was able to dig up in my internet travels. As always, be sure to check back in the future as I will be updating this post as new and updated stats become available.
Photo by Andrew Buchanan on Unsplash
California is no stranger to earthquakes, with the state experiencing thousands of seismic events each year. With its location on the San Andreas fault, California is particularly vulnerable to earthquakes, which can range in severity from mild tremors to devastating quakes that can cause widespread damage and loss of life. But just how common are earthquakes in California, and what are some important facts to know about these seismic events?
In this article, we’ll explore the latest California earthquake facts, including the number and frequency of earthquakes in the state, as well as their causes and potential impact. We’ll also examine the latest research and technological developments that are helping to better predict and prepare for earthquakes in California.
We’ll delve into the history of some of the most significant earthquakes in California, including the 1906 San Francisco earthquake and the 1994 Northridge earthquake, and discuss the lessons that have been learned from these events. We’ll also examine the potential risks and challenges associated with earthquakes, including the need for emergency preparedness and the impact on infrastructure and the economy.
Whether you’re a resident of California or simply interested in the science behind earthquakes, this article will provide you with a comprehensive and informative look at California earthquake facts. So, let’s dive in and explore this fascinating and important topic.
California Earthquake Facts and Statistics
Earliest reported California earthquake:
1769 (30 miles Southeast of Los Angeles)
Largest California earthquake of all time:
1906 San Francisco and 1857 Fort Tejon earthquakes (7.9)
Deadliest California earthquake in history:
1906 San Francisco earthquake (3,000 deaths)
Costliest California earthquake in history (not adjusted for inflation):
1994 Northridge earthquake ($15 billion)
Number of 3.0 or greater earthquakes in California:
- 2015: 130
- 2014: 191
- 2013: 240
- 2012: 243
- 2011: 195
- 2010: 546
Average number of earthquakes in southern California earth year:
about 10,000 earthquakes each year (only 15-20 are greater than 4.0)
Number of known faults in California:
Number of active faults in California:
The San Andreas Fault runs almost the entire length of California.
California accounts for 60% of all earthquake insurance premiums written in the US.
Please note that some of these numbers are easier to find than others. Most of these fun facts come from internet reports and may not be official tallies. No information contained on DMR should be relied upon to make investment decisions. Basically, this is the best I can find and I don’t guarantee anything to be 100%.
