STATE RISK ROLL-UP

Illinois

Across 102 counties, FEMA rates 6 elevated or higher for overall natural-hazard risk. Here's what drives it — and where it concentrates.

How the counties rate

低82

中等14

偏高5

高1

Dominant hazards

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

强风 — 33 counties
冬季恶劣天气 — 15 counties
龙卷风 — 14 counties
闪电 — 12 counties

Highest-risk counties

County	FEMA composite	Score
Cook County	非常高	100
DuPage County	相对较高	98
Will County	相对较高	97
Lake County	相对较高	96
Kane County	相对较高	95
St. Clair County	相对较高	95

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