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

Osceola County Disaster Risk

Osceola County, Iowa

FEMA Risk Rating

Very Low

National Percentile

15th

of 3,144 counties

State Rank

#95

of 99 (1 = highest risk)

Flood Risk

15th

percentile

Hazard Risk Breakdown

Flood

River, coastal, and surface flooding risk

Very Low

Higher than 15% of US counties

Wildfire

Wildland and wildland-urban interface fire risk

Very Low

Higher than 13% of US counties

Tornado

Tornado and severe thunderstorm risk

Very Low

Higher than 43% of US counties

Earthquake

Seismic activity and ground shaking risk

Very Low

Higher than 9% of US counties

Risk Overview

About Natural Disaster Risk in Osceola County, Iowa

Osceola County among nation's safest

Osceola County's composite risk score of 14.85 ranks as Very Low, placing it among America's lowest-risk counties overall. Your community faces minimal combined exposure to major natural disasters.

One of Iowa's safest counties

At 14.85, Osceola County sits well below Iowa's state average of 39.68. You rank in the top tier of Iowa counties for overall natural disaster protection.

Protected compared to surrounding counties

Osceola County (14.85) is slightly riskier than Monroe County (10.31) but safer than O'Brien County (16.41). Your northwestern location provides exceptional geographic protection from major hazards.

Tornados are minimal but present risk

Tornado risk at 42.65 is Osceola County's highest concern, still running below state average. Flood (14.89), wildfire (12.88), and earthquake (9.32) risks all remain very low.

Basic storm preparedness suffices

Osceola County's low overall risk means standard homeowners insurance with wind coverage and a basic emergency kit provide solid protection. Maintain tornado awareness during spring season, but your low-risk profile allows you to focus financial resources on other priorities.

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

Preparedness Guide

What to Prepare for in Osceola County

Top Hazards by Exposure

  1. #1
    TornadoPrepare
    43th percentile
  2. #2
    FloodPrepare
    15th percentile
  3. #3
    WildfirePrepare
    13th percentile

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

Risk Advisory: Osceola County

Risk Verdict

Osceola County carries a low natural disaster risk burden, scoring at the 15th percentile under the FEMA National Risk Index. Residents of Osceola County can use the 15th percentile ranking as a baseline, while recognizing that individual properties may still lie in specific hazard zones that differ from the county average.

Hazard Breakdown

Tornado risk is Osceola County's dominant natural hazard, ranked at the 43th percentile nationally under FEMA's National Risk Index. Flood ranks second at the 15th percentile nationally. Additional tracked hazards include wildfire (13th percentile), earthquake (9th percentile).

Preparedness Context

Osceola County's primary hazard, tornado, ranks at the 43th percentile nationally. In Osceola County, mobile homes and manufactured housing face significantly higher tornado risk than site-built structures; residents in these homes should identify the nearest permanent community shelter in advance. The secondary flood hazard at the 15th percentile nationally adds seasonal complexity to Osceola County's preparedness calendar, since flood and tornado risk often peak at different points in the year. The highest-risk window for tornado fatalities is overnight, when Osceola County residents may be asleep. A NOAA weather radio with overnight alert capability is the single most impactful low-cost preparedness step available to Osceola County households.

Regional Context

Compared to the Iowa county average, Osceola County's composite score runs 24.8 points lower — a gap that reflects the county's relatively modest hazard profile within its state context.

Is your household prepared for Osceola 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 Osceola County, IA?
Osceola County has a FEMA National Risk Index rating of Very Low, placing it in the 15th 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 Osceola County?
Osceola County is evaluated for five major natural hazard types: tornado (43th percentile), flooding (15th percentile), wildfire (13th percentile), earthquake (9th percentile). The highest-risk hazard is tornado at the 43th 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 Osceola County risk compare to the Iowa average?
Osceola County's composite risk percentile is 15th, compared to the Iowa state average of 40th percentile. The state's overall risk rating is Very Low. This means Osceola County faces lower natural disaster risk than the typical county in Iowa.
Is Osceola County at risk for tornado?
Yes, Osceola County's tornado risk is at the 43th percentile nationally. This is below the national median, indicating relatively lower exposure. For flooding specifically, Osceola County is at the 15th percentile.
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 Osceola County a safe place to live?
Osceola County's composite risk score of 15th percentile is below the Iowa state average of 40th percentile, indicating relatively lower exposure to natural hazards. However, no county is completely risk-free. The primary hazard type is tornado at the 43th 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.