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

低い10

中程度17

やや高い22

高い9

Dominant hazards

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

洪水 — 33 counties
干ばつ — 32 counties
山火事 — 30 counties
地滑り — 29 counties

Highest-risk counties

County	FEMA composite	Score
Alameda County	非常に高い	100
Los Angeles County	非常に高い	100
Orange County	非常に高い	100
Riverside County	非常に高い	100
San Bernardino County	非常に高い	100
San Diego County	非常に高い	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