STATE RISK ROLL-UP

Wisconsin

Across 72 counties, FEMA rates 1 elevated or higher for overall natural-hazard risk. Here's what drives it — and where it concentrates.

How the counties rate

Low62

Moderate9

Elevated1

High0

Dominant hazards

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

Tornado — 8 counties
Winter weather — 3 counties
Flooding — 2 counties
Extreme heat — 1 county

Highest-risk counties

County	FEMA composite	Score
Milwaukee County	Relatively High	98
Dane County	Relatively Moderate	94
Brown County	Relatively Moderate	90
Waukesha County	Relatively Moderate	89
Marathon County	Relatively Moderate	87
Winnebago County	Relatively Moderate	87

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 2026-07-08