STATE RISK ROLL-UP

California

Across 58 counties, FEMA rates 31 elevated or higher for overall natural-hazard risk. Here's what drives it — and where it concentrates.

How the counties rate

低10

中等17

偏高22

高9

Dominant hazards

The hazards most often rated elevated or higher across California's counties:

洪水 — 33 counties
干旱 — 32 counties
野火 — 30 counties
山体滑坡 — 29 counties

Highest-risk counties

County	FEMA composite	Score
Alameda County	非常高	100
Los Angeles County	非常高	100
Orange County	非常高	100
Riverside County	非常高	100
San Bernardino County	非常高	100
San Diego County	非常高	100

State figures are a roll-up of FEMA National Risk Index county data (counts and rankings), not an official FEMA state rating. Risk is an estimate from a public model, not a guarantee — verify your specific insurance needs with a licensed professional. See the methodology.

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FEMA National Risk Index · as of 2026-07-10