High Risk California  ·  Wildfire / Earthquake

Orange County CA

EMERGENCY PREPAREDNESS & DISASTER RISK PROFILE  ·  LAST UPDATED: Mar 2026

7/ 10
Threat Score
Population
3186989
Area
948
sq miles
Primary Hazard
Wildfire / Earthquake
FEMA Disasters
45
federally declared

Orange County sits between the Santa Ana Mountains and the Pacific Ocean, creating wildfire corridors that have produced some of Southern California's most destructive fires. The 2007 Santiago Fire burned over 28,000 acres. Coastal areas face tsunami risk from Pacific subduction zone events, and the county sits near multiple active fault systems.

// Risk Intelligence

Threat Score 7 / 10    High Risk
Primary Hazard Wildfire / Earthquake
Secondary Hazard Tsunami
FEMA Flood Zone Zone X (Seismic High Risk)
Federally Declared Disasters 45
Last Major Event Santiago Fire (2007)
Event Frequency Major event every 4–5 years

// Emergency Operations

Emergency Mgmt Phone (714) 628-7085
Emergency Shelters 58 designated facilities
Evacuation Routes I-5 North, I-405 North, SR-55 North, SR-91 East

// Recommended Preparedness Gear

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// County Profile

County Orange County CA
State California (CA)
Population 3186989
Area 948 sq miles
FEMA Region Zone X (Seismic High Risk)

// Other California Counties