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

Niedrig82

Moderat14

Erhöht5

Hoch1

Dominant hazards

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

Starker Wind — 33 counties
Winterwetter — 15 counties
Tornado — 14 counties
Blitzschlag — 12 counties

Highest-risk counties

County	FEMA composite	Score
Cook County	Sehr hoch	100
DuPage County	Relativ hoch	98
Will County	Relativ hoch	97
Lake County	Relativ hoch	96
Kane County	Relativ hoch	95
St. Clair County	Relativ hoch	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