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Earthquake history in California

California has 31 county-level earthquake declarations across 24 counties. Los Angeles County leads with 3 declarations. Total tracked FEMA obligations for earthquake events in this state: $115.8M.

This page shows every California county in California that has at least one FEMA earthquake declaration on record, ranked by how many times that hazard type triggered federal aid. Counties near the top of this list have recurring exposure to earthquake events — useful context for anyone evaluating property risk, insurance needs, or emergency planning in the area.

For the full national view of earthquake declarations across all states, see the earthquake disaster type page. For all hazard types in California, see the California state page.

Earthquake in California

Counties ranked by earthquake declaration count

#CountyDeclarationsTracked aid
1Los Angeles County3$0
2Imperial County2$25.0M
3Napa County2$32.6M
4Orange County2$0
5San Bernardino County2$0
6Solano County2$4.5M
7Alameda County1$0
8Contra Costa County1$0
9Humboldt County1$0
10Kern County1$0
11Kings County1$0
12Marin County1$0
13Monterey County1$0
14Riverside County1$0
15Sacramento County1$0
16San Benito County1$0
17San Francisco County1$0
18San Joaquin County1$0
19San Luis Obispo County1$53.0M
20San Mateo County1$0
21Santa Barbara County1$673K
22Santa Clara County1$0
23Santa Cruz County1$0
24Ventura County1$0