STATE RISK ROLL-UP

Iowa

Across 99 counties, FEMA rates 0 elevated or higher for overall natural-hazard risk. Here's what drives it — and where it concentrates.

How the counties rate

Low94

Moderate5

Elevated0

High0

Dominant hazards

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

Drought — 45 counties
Winter weather — 9 counties
Tornado — 8 counties
Extreme heat — 1 county

Highest-risk counties

County	FEMA composite	Score
Polk County	Relatively Moderate	92
Johnson County	Relatively Moderate	87
Linn County	Relatively Moderate	87
Scott County	Relatively Moderate	85
Woodbury County	Relatively Moderate	83
Pottawattamie County	Relatively Low	80

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