Natural Disaster Risk in San Diego County
California
Risk Summary for San Diego County
San Diego County scores 7.4/10 (High risk), above the U.S. average of 4.5. The leading hazard is Earthquake.
Top Hazards
All 18 Hazard Scores
How it compares
Live Conditions
🏠 What this means for insurance
Above-average risk — check your policy limits
Standard homeowners insurance may not fully cover all hazards rated highly in this area. Verify that your policy includes adequate coverage for the top local hazards, and ask your insurer about specific endorsements or separate policies (e.g., flood, earthquake).
This is general information only. Consult a licensed insurance professional for advice specific to your property.
Natural Hazard Profile: San Diego County, California
San Diego County, in the United States in California, is characterized by its Mediterranean climate — dry summers and mild, wet winters with pronounced drought cycles. The county faces a critical fire season from late summer through fall, and its FEMA risk assessment establishes the hazard baseline shared by all the towns and cities it contains.
According to FEMA's National Risk Index, San Diego County carries an overall risk score of 7.4/10, placing it in the high category. Seismic activity is the dominant hazard, with the community situated in or near an active tectonic zone capable of producing damaging ground shaking. The area also faces notable exposure to landslide and wildfire.
Within California, San Diego County's risk is, slightly above the 5.9/10 state average. Nationally, it ranks well above the U.S. national average of 4.5/10. FEMA's analysis of San Diego County identifies earthquake as the foremost hazard, followed by landslide and wildfire. These rankings reflect the relative frequency and severity of each hazard type in the local environment.
San Diego County's high risk designation reflects meaningful exposure to natural hazards. Residents should verify that their insurance covers the area's primary risks, prepare a family emergency plan, and stay informed about seasonal hazard peaks through local weather and emergency management services.
What this means for San Diego County: Earthquake preparedness
- Identify "drop, cover, and hold on" spots in each room and keep an emergency kit with water for at least 72 hours.
- Standard homeowners insurance excludes earthquake damage — a separate earthquake policy or endorsement is needed.
- Secure heavy furniture, water heaters, and shelving to wall studs to reduce injury and damage during shaking.
Cities in San Diego County
ZIP codes in San Diego County
Data source: FEMA National Risk Index (NRI). Scores normalized to 1–10 across all US counties. For informational purposes only.