riskbycounty
FEMA NRI 1.19.0Updated Nov 2023 · Coverage 2014–2023Methodology

Iron County Disaster Risk

Iron County, Wisconsin

FEMA Risk Rating

Very Low

National Percentile

11th

of 3,144 counties

State Rank

#70

of 72 (1 = highest risk)

Flood Risk

22th

percentile

Hazard Risk Breakdown

Flood

River, coastal, and surface flooding risk

Very Low

Higher than 22% of US counties

Wildfire

Wildland and wildland-urban interface fire risk

Very Low

Higher than 7% of US counties

Tornado

Tornado and severe thunderstorm risk

Very Low

Higher than 12% of US counties

Earthquake

Seismic activity and ground shaking risk

Very Low

Higher than 0% of US counties

Hurricane

Tropical cyclone and hurricane risk

Very Low

Higher than 0% of US counties

Risk Overview

About Natural Disaster Risk in Iron County, Wisconsin

Iron County: Exceptionally Low National Risk

Iron County's composite risk score of 11.48 ranks among the lowest in the nation, earning a Very Low rating. The county experiences far less natural disaster exposure than the typical American county.

Wisconsin's Safest County

Iron County's score of 11.48 is less than one-fifth of Wisconsin's state average of 59.08, making it the state's lowest-risk county. No other Wisconsin county comes close to this level of safety across all major disaster types.

Clear Leader in Regional Safety

Iron County's 11.48 score is dramatically lower than neighboring Ashland County and other regional peers. The county's isolation in northern Wisconsin, combined with its geography, creates a uniquely protected environment.

Flood Risk Leads, But Remains Minimal

Iron County's highest risk is flooding at 21.80, with tornado risk at 12.25 as a secondary concern. Earthquake (0.35), wildfire (7.41), and hurricane (0.00) risks are negligible.

Basic Coverage Protects Iron County Homes

Iron County residents benefit from exceptionally low disaster exposure and can rely on standard homeowners insurance for most protection. Maintaining good drainage around your property addresses the county's primary flood risk.

Source: FEMA National Risk Index · Narrative reviewed by Evan Brooks, Data Editor

Preparedness Guide

What to Prepare for in Iron County

Top Hazards by Exposure

  1. #1
    FloodPrepare
    22th percentile
  2. #2
    TornadoPrepare
    12th percentile
  3. #3
    WildfirePrepare
    7th percentile

Source: FEMA National Risk Index v1.19.0 · Percentiles are national (3,144 counties)

Risk Advisory: Iron County

Risk Verdict

Iron County's overall natural disaster score at the 11th percentile puts it well below the national median for hazard exposure. The 11th percentile national ranking is one lens; Iron County residents also benefit from reviewing which specific hazard types drive the county's composite score and preparing accordingly.

Hazard Breakdown

Flood risk is Iron County's dominant natural hazard, ranked at the 22th percentile nationally under FEMA's National Risk Index. Tornado ranks second at the 12th percentile nationally. Additional tracked hazards include wildfire (7th percentile), earthquake (0th percentile), hurricane (0th percentile).

Preparedness Context

Flood risk is Iron County's top hazard at the 22th percentile nationally. Households in or near designated flood zones face elevated financial exposure; flood insurance typically requires a 30-day waiting period before it takes effect, so applying before the season is advisable. The county's second-ranked hazard, tornado at the 12th percentile nationally, means Iron County residents face compounding risks from multiple natural hazard types during peak seasons. Households across Iron County should identify the nearest community shelter and keep a basic emergency kit — water, non-perishable food, medications, flashlight, and battery radio — in a location easy to grab quickly.

Regional Context

Iron County's composite risk score sits 47.6 points below the Wisconsin county average, reflecting a more favorable hazard environment than the state typical.

Is your household prepared for Iron County's hazards?

Review FEMA's county-specific preparedness checklists and emergency planning guides.

FEMA Ready Guide →

Frequently Asked Questions

What is the natural disaster risk in Iron County, WI?
Iron County has a FEMA National Risk Index rating of Very Low, placing it in the 11th percentile nationally out of 3,144 counties. This composite score reflects the county's overall exposure to natural hazards including floods, wildfires, tornadoes, earthquakes, and hurricanes, weighted by expected annual loss and social vulnerability.
What types of natural hazards affect Iron County?
Iron County is evaluated for five major natural hazard types: flooding (22th percentile), tornado (12th percentile), wildfire (7th percentile), earthquake (0th percentile), hurricane (0th percentile). The highest-risk hazard is flooding at the 22th percentile nationally. These scores are derived from FEMA's National Risk Index, which analyzes expected annual loss, social vulnerability, and community resilience for each hazard type.
How does Iron County risk compare to the Wisconsin average?
Iron County's composite risk percentile is 11th, compared to the Wisconsin state average of 59th percentile. The state's overall risk rating is Relatively Low. This means Iron County faces lower natural disaster risk than the typical county in Wisconsin.
Is Iron County at risk for flooding?
Yes, Iron County's flooding risk is at the 22th percentile nationally. This is below the national median, indicating relatively lower exposure.
How is natural disaster risk measured?
FEMA's National Risk Index (NRI) calculates risk scores for 18 natural hazard types across all U.S. counties and census tracts. The composite score combines Expected Annual Loss (estimated dollar losses from each hazard), Social Vulnerability (demographic factors affecting disaster impact), and Community Resilience (ability to recover). Percentile scores rank each county against all 3,144 U.S. counties, and risk ratings range from Very Low to Very High.
Is Iron County a safe place to live?
Iron County's composite risk score of 11th percentile is below the Wisconsin state average of 59th percentile, indicating relatively lower exposure to natural hazards. However, no county is completely risk-free. The primary hazard type is flooding at the 22th percentile. Residents should still maintain emergency preparedness plans and appropriate insurance coverage.
By Evan Brooks, Data EditorUpdated Reviewed by Evan Brooks, Data Editor

Data Source

Risk data sourced from the FEMA National Risk Index (NRI). Risk scores are relative rankings (0–100) across all US counties — not absolute risk measures. Higher scores indicate higher relative risk compared to other counties.

Disclaimer: This data is informational only. It is not financial, insurance, or legal advice. Always consult a qualified professional before making insurance or real estate decisions.